Consulting Consulting
Back to overview

Business Sense

Business sense refers to the ability to quickly grasp economic dynamics and make decisions that are both strategically and commercially sound. In consulting, it’s not enough to repeat theories from your business degree. What matters is a deep understanding of how companies operate, what drives markets, and what different stakeholders are aiming to achieve.

Consultants with strong business acumen can quickly adapt to new industries, understand client needs, and set priorities that make economic sense. They don’t just ask, “What is analytically correct?” – they also ask, “What truly benefits the company?” This mindset often makes the difference in a case interview.
 

 

Why Your Business Sense Matters in Consulting

As a consultant, you’re expected not only to analyze complex problems but also to think in a solution-oriented and entrepreneurial way. A strong business mindset helps you put analyses into context, assess actions realistically, and focus on generating maximum client value.

In day-to-day consulting, you're working under pressure, collaborating with decision-makers, and constantly weighing trade-offs. Those who think commercially and can strategically prioritize have a clear edge.

In a case interview, showing that you understand markets and business models is key – it sets you apart and proves your readiness for the job.

👉 In our Case Library, you can prepare effectively with curated practice cases and put your business sense to the test.

Company case provided by Company case by
Bain & Company
Bain Case: BeautyCo – Where Did the Profits Go?
Our client BeautyCo is a large European perfumery company with 500 shops across Europe. However, BeautyCo has been struggling with a decrease in profitability for some time and would like to work with us to understand what the causes and possible actions could be. Therefore, as a first step the client wants us to identify the cause of the profitability issues.
4.6
71.0k times solved
Difficulty: Intermediate
Candidate-led
Market analysis
Profitability analysis
Company case provided by Company case by
Oliver Wyman
Oliver Wyman Case: On the Right Track
TrainCo is a manufacturer of rolling stock, or trains, with production sites in three European countries. The company has seen declining profitability over the past years; however, they are currently in a very good position to bid for and win a big contract for regional trains for a Swiss national rail company. They have asked you advise to them on whether they should place a bid for the contract.
4.4
93.9k times solved
Difficulty: Beginner
Candidate-led
Operations strategy
Profitability analysis
Company case provided by Company case by
Mercedes-Benz Management Consulting
MBMC Case: Exploring the future of automotive mobility
As a consultant at Mercedes-Benz Management Consulting (MBMC), you are actively shaping the future of automotive mobility. While you are contributing to decisive projects that design the future of the world’s No.1 premium carmaker, you also develop your own career path, and you have the unique possibility to build your personal brand and cultivate relationships with the top management. Your client on your current project is the head of product strategy who reports directly to the CEO. She asks you to explore new profit pools and business opportunities regarding innovations and monetarization strategies. Initially, you shall structure and explore potential business models, and discuss necessary conditions and implications of these business models. In a next step, you shall quantitatively analyze possible options and prepare them for decision. And of course, the client is interested in your recommendation.
3.7
13.6k times solved
Difficulty: Intermediate
Interviewer-led
New product
Profitability analysis
Company case provided by Company case by
Roland Berger
Roland Berger Case: Launch of a Mobile Neobroker
"FemVest" is a venture-backed fintech aiming to launch a mobile neobroker in Germany in 2026. The company believes that women are structurally underserved in the area of retail investing: women are less likely to hold a securities account, invest smaller amounts on average, and enter the market later than men. At the same time, the financial relevance of women is growing — driven by rising incomes, demographic shifts, and inheritances. FemVest has already secured regulatory approval as well as a custodian bank and execution partner. However, key strategic decisions remain open: the target segment has not been finalized, the product and service offering is not yet defined, the business model has not been established, and the go-to-market strategy has not yet been developed. The board is asking you, as a consultant, to analyze the market potential, develop an initial business case, and derive concrete strategic recommendations for market entry.
5.0
3.7k times solved
Difficulty: Intermediate
Candidate-led
Market analysis
Market entry
New product
Case by
PrepLounge
Electric Mobility
Our client is a start-up company that wants to mass-produce an electric vehicle for the US market. So far it has developed a prototype all-electric vehicle. They hired us to solve the problem of swapping to mass-production.
4.2
14.0k times solved
Difficulty: Intermediate
Interviewer-led
Market analysis
Operations strategy
Expert case by
Cristian
Digital Lab at LETA Bank (McK/BCG Digital)
Let’s assume our client is LETA Bank, a large Central European bank with around 3M customers and within the top five banks in the mid-sized European country where it is operating. In a recent benchmarking exercise led by the European banking group that owns the bank, LETA Bank appears to be underperforming relative to competitors in terms of its personal loan sales. Our objective is to support LETA Bank in identifying the root cause of its underperformance and to develop a strategy for addressing it. The bank recently hired a new CTO who is excited about working with us and whose hypothesis is that the bank is currently lagging behind in terms of its digital assets and products, which makes it fall short of customer expectations, thus leading to lower sales across its product groups and especially in its most popular lending product – the personal loans.
4.9
7.1k times solved
Difficulty: Advanced
Interviewer-led
Competitive response
Growth strategy
Market analysis
New product
Organizational behavior
Profitability analysis
Company case provided by Company case by
Forvis Mazars
Forvis Mazars Case: Prüfung der Carvermietungen GmbH
Sie sind Abschlussprüfer der CarVermietungen GmbH, einem deutschen Unternehmen, das geleaste Fahrzeuge europaweit an Privat- und Geschäftskunden weitervermietet. Im Rahmen der Prüfung führen Sie Interviews mit dem Management des Unternehmens durch. Dabei wecken insbesondere die langfristigen ökologischen und digitalen Herausforderungen der Firma Ihr Interesse. Sie erfahren unter anderem, dass die Hauptunterschiede zum üblichen Geschäft in einem Transformationsplan liegen und lassen sich vom CFO den Plan vorstellen. Die Finanzdirektorin teilt Ihnen stolz mit, dass die CarVermietungen GmbH in die Elektrifizierung der Fahrzeugflotte investiert. Die Anzahl der Elektroautos wird im Lagebericht veröffentlicht. Die CarVermietungen GmbH bietet ihren Kunden seit dem vierten Quartal eine Erweiterung zum bestehenden Bonusprogramm an. Die Kunden können ihre gesammelten Bonuspunkte am Jahresende auf ein Umweltprogramm übertragen, das vorwiegend in den Anbau von Bäumen und Wasseralgen investiert, um die klimafreundliche CO2-Bindung zu fördern. In diesem Zusammenhang hat das Unternehmen auch eine weitere Zielgruppe definiert und eine entsprechende Kundenliste erstellt. Darüber hinaus wurden im laufenden Geschäftsjahr durch den Zukauf von Daten über ein soziales Netzwerk zusätzlich neue Kunden hinzugewonnen. Die CarVermietungen GmbH hat im letzten Quartal außerdem in P2P-Carsharing investiert, da sich dieses neue Geschäftsmodell im Ausland bereits als vielversprechend erwiesen hat. Private Autobesitzer haben die Möglichkeit, ihr Fahrzeug über die Carsharing-Plattform anzubieten und die Vermietung gänzlich über eine App abzuwickeln. Die Mietwagengebühren betragen ein Drittel des Mietwertes und die CarVermietungen GmbH zahlt eine Versicherung, die jeden Kunden abdeckt. Die Versicherungsprämien für das Folgejahr wurden bereits ausgezahlt.
4.0
9.1k times solved
Difficulty: Intermediate
Interviewer-led
Audit
Valuation
Company case provided by Company case by
RSM Ebner Stolz Management Consultants
RSM Ebner Stolz Case: Noch zu retten?
Sie werden vom Management der mittelständischen Packaging-Group gebeten, eine Einschätzung zur wirtschaftlichen Lage des Konzerns abzugeben. Im Rahmen der Analyse der operativen Ergebnisse der Auslandswerke soll das Werk identifiziert werden, bei dem der aktuell größte Handlungsbedarf besteht. Davon ausgehend sollen Optionen erarbeitet und bewertet werden, die der Kandidat dem Management im Umgang mit diesem Auslandswerk empfehlen würde und was ggf. auf Basis der Analyse für Rückschlüsse hinsichtlich der Konzernzahlen gezogen werden können.
3.0
12.8k times solved
Difficulty: Intermediate
Interviewer-led
Operations strategy
Profitability analysis
Case by
PrepLounge
Inverto Case: VacuLuxe Innovations' Supply Chain Makeover
The client, VacuLuxe Innovations, is a manufacturer for vacuum pumps, e.g. rotary vane pumps, cryogenic pumps located in Germany. The company has grown from a start-up to a major corporation over the last 50 years. However, after benchmarking the economics of their business, the client discovered that their direct spend (i.e., COGS supplier spend) represented a higher percentage of their revenue than their closest competitors. The client's top management has engaged the SCM and procurement specialized consultancy Inverto to advise the company in this critical situation. An initial meeting with the CPO of VacuLuxe Innovations will be conducted tomorrow. VacuLuxe Innovations aims to discuss optimization potentials in the current collaboration with suppliers as well as levers to improve the supply chain resilience & carbon footprint. Unfortunately, VacuLuxe Innovations has only submitted the following high level data for their direct spend yet.
4.1
19.1k times solved
Difficulty: Intermediate
Candidate-led
Operations strategy
Organizational behavior
Profitability analysis
Expert case by
Clara
Swiss Coffins – The Death Business
Your client is the CEO of a coffin manufacturing company based in Geneva, Switzerland (Europe). The company has existed with little changes to the business model for three generations, manufacturing high-quality, hand-crafted coffins, with a highly skilled and specialized labor force. The industry has been recently disrupted by new technologies that no longer need human manufacturing: machines can manufacture faster and cheaper. Your client needs your help in deciding whether to invest in this technology and transform his business, or remain in the hand-manufactured business for coffins *Note: On top of this initial question that focuses on the strategy and should be tackled by the candidate with an issue tree, the case includes more questions that can be found in the "Detailed solutions" and "Difficult questions" boxes below, with the correspondent proposed answers.
4.7
2.9k times solved
Difficulty: Advanced
Candidate-led
Brain teaser
Growth strategy
Market analysis
Market sizing
Operations strategy
Case by
PrepLounge
Perpetual motion
After a congress about general science in which you took part out of personal interest, a renowned scientist comes to talk to you. He swears he invented the world’s first perpetual motion apparatus. It requires no energy source and keeps running forever. It can even turn a small fan with its motion. The scientist asks you in which markets he can monetize the invention and how much money he could make in Europe in the first year.
4.1
11.1k times solved
Difficulty: Advanced
Candidate-led
Market entry
Market sizing
New product
Expert case by
Cristian
StyleScape responds to customer feedback (McKinsey final round)
Style Scape is a mid-sized retailer that sells clothing, accessories, and home goods through its physical stores and online platform. The business has been around for over a decade and has seen consistent growth in sales in its home market of the United States. Style Scape operates 30 stores nationwide, and its online platform is relatively new, having launched only two years ago. Despite healthy growth, the company's leadership has noticed an alarming decline in customer satisfaction ratings and an increase in customer complaints. They are concerned that these issues will harm the company's reputation and negatively impact its bottom line. The CEO of Style Scape has requested your assistance in determining the root causes of these issues and developing recommendations to address them.
5.0
2.2k times solved
Difficulty: Advanced
Interviewer-led
Competitive response
Growth strategy
Market analysis
Organizational behavior
Company case provided by Company case by
Mercedes-Benz Management Consulting
MBMC Case: Software-Revolution im Automobilsektor
Ein Automobilhersteller hat zu einer Strategiekonferenz mit dem Vorstand eingeladen. Es soll die zukünftige Positionierung des Unternehmens diskutiert werden. Sie sind als Speaker in der Konferenz eingeplant und sollen einige Fragestellungen beantworten, die Sie vom Vorstand erhalten haben. Grundsätzlich kommt es dem Unternehmen darauf an, mit der strategischen Ausrichtung einen mittel- bis langfristigen Wettbewerbsvorteil auf dem Markt zu erlangen.
4.6
8.7k times solved
Difficulty: Intermediate
Interviewer-led
New product
Profitability analysis
Expert case by
Emily
Pets Medicine Profit Improvement
Your client is a global drug company producing and selling medicine (pills, powder, ointments, injections, etc.) for a variety of pets (dogs, cats, birds, fish etc.). In addition to organic growth, the company grew significantly over the past few years by acquiring several other pets medicine companies in different parts of the world. During this period, profitability of the company decreased significantly. The CEO is concerned with this decline and wants to put in place a plan to raise the profitability to at least 70%.
5.0
600+ times solved
Difficulty: Beginner
Candidate-led
Profitability analysis
Case by
PrepLounge
Bank growth strategy
A bank based in a developing country in Africa has hired us to find out how it can grow its local retail banking business unit. What aspects would you investigate? What would you recommend to our client?
4.4
29.9k times solved
Difficulty: Intermediate
Candidate-led
Market analysis
Mergers & Acquisition
Profitability analysis
Case by
PrepLounge
Bus maintenance
Your client, BusCo, is a passenger bus company in Uganda, Africa. Due to the poor road conditions, maintenance plays a very important role in the reliability and quality of BusCo’s services. BusCo outsourced all of its bus maintenance operations to MaintainCo in the last years. However, especially last year, BusCo was very disappointed with the maintenance provided. The bad service caused delays in service as well as trip cancellations. Now BusCo is considering doing its maintenance in-house. However, an investment amortization period of 4 years or less is required. The CEO wants to know from you if they should pursue the in-house maintenance strategy next year?
4.4
18.3k times solved
Difficulty: Beginner
Candidate-led
Operations strategy
Profitability analysis
Company case provided by Company case by
BCG Platinion
BCG Platinion Case: ERP strategy & S/4HANA migration for “DekoKonzept”
Our client is the company “DekoKonzept”, which primarily sells home accessories and small furniture. DekoKonzept generates approximately €700M in revenue and operates mainly in Germany, with some presence in other European countries. The company is particularly represented through physical stores in major German cities and downtown areas but is also expanding its online shop significantly. A variety of outdated and often self-developed IT systems are currently used for core processes such as procurement, warehousing, and point-of-sale operations. DekoKonzept is also facing the challenge that its ERP system (SAP ECC 6.0) will soon no longer be officially supported by SAP. Therefore, they aim to migrate to the successor system SAP S/4HANA as soon as possible. This migration presents an opportunity to review, standardize, and harmonize many of the existing processes and systems. The next step is to further assess and evaluate the impact on costs, budget, and scope. Note: This case is interviewer-led. The cases in our interviews are more candidate-led. In this case, you take the lead and manage the entire case from start to finish. So be prepared for this when you apply to us.
4.2
11.2k times solved
Difficulty: Intermediate
Interviewer-led
Operations strategy
Expert case by
Ian
MBB - Climate Change Operations
A mid-sized manufacturing company is concerned about the potential impacts of climate change on its operations. The company has a number of factories located in coastal regions that are vulnerable to flooding and other weather-related events, and it is concerned about the potential financial and reputational risks associated with these events. The company's leadership team has asked your consulting firm to help them understand the risks they face and develop a plan to mitigate those risks. Clarifying Info: - Our client’s objective is to maintain long-term profitability - Our client’s factories are located throughout the US =================================================== Note: Once you have solved this case, make sure to solve the 2nd version of this case: MBB - Climate Change Operations - Part 2 | PrepLounge.com This case is designed to show you how a case can evolve/change based on new information. The first half of this case is the same, but diverges once data and #s are provided. To learn more about how to use case leadership to navigate dynamic cases, please read here: Candidate-Led Cases: What to Expect With Example Cases
5.0
4.1k times solved
Difficulty: Intermediate
Candidate-led
Capacity change
Market analysis
Operations strategy
Restructuring
Sustainability
Company case provided by Company case by
DHL Consulting
DHL Consulting Case: Local Commerce
DHL aims to create a new E-Commerce business model that combines: - A DHL-owned online marketplace. - Participation limited to local retailers. - Same-day parcel delivery services by DHL. The strategic goal is to strengthen the stationary retail sector as an important customer group. The DHL Consulting team is tasked by the DHL Business Unit "Post & Parcel Germany" (P&P) with identifying a suitable German city for a pilot project and estimating the potential revenue in that city.
4.3
10.8k times solved
Difficulty: Beginner
Interviewer-led
Market entry
Market sizing
Case by
PrepLounge
Pharma R&D
Your client is a pharmaceutical company which is worried about the portfolio optimization of their R&D projects. They hired us to investigate it and help them make the most return of their R&D investments in the short and mid-term (without totally forgetting the long-term horizon). How would you go about it and what would you recommend the client to do?
4.4
65.1k times solved
Difficulty: Intermediate
Candidate-led
Market analysis
Operations strategy
Profitability analysis

How Business Sense Shows Up in Case Interviews

Your business sense won’t be tested directly – but it shows up in your thinking, your assumptions, and your recommendations. Here are five moments when it really counts:

5 tips on how to show business sense in case interviews

1. Define a clear objective.

Clarify what the company wants to achieve in the case. Is it short-term profit, long-term growth, or a stronger market position? A well-defined goal aligns your analysis and recommendations – and shows you understand the business context.

2. Develop sound hypotheses.

Top candidates derive economically plausible hypotheses. If revenue is dropping, explore potential causes like demand, pricing, or competitive pressure.

3. Evaluate actions realistically.

Go beyond theory. Consider real-world feasibility, conflicting objectives, and strategic risks. Instead of simply saying “raise prices,” consider price elasticity, customer segments, and likely competitor reactions.

4. Interpret numbers in the right context.

Numbers only make sense when interpreted correctly. High margins might signal a premium position – or upcoming competitive threats. Business sense means understanding what the numbers imply in context.

5. Make a well-founded recommendation.

Your final recommendation should be logical and economically viable. Acknowledge risks or gaps, and show that your solution could succeed in the real world.
 

How to Train Your Business Sense

Business sense isn’t innate – it’s a skill you can develop. The key is to build a solid understanding of economic principles and learn how real-world decisions are made.

Start by regularly reading business news. Outlets like New York Times, the Wall Street Journal or the Financial Times will help you get a feel for markets, business models, and strategic thinking. Go beyond the facts – try to understand the economic rationale behind each story.

When practicing case interviews, stay sharp and reflective. Ask yourself: Is my reasoning not only logical but also economically sound?

Mock interviews with peers are especially helpful. You’ll improve your communication skills and receive valuable feedback.

👉 Use our Meeting Board to find peers and practice together.

Oct 14
12:45 PM – 2:15 PM
Novice
Reliability: N/A
English, German
Novice, Advanced, Pro
Oct 14
6:30 PM – 8:00 PM
Novice
100% Reliability
English
Advanced, Pro
Oct 14
8:00 PM – 9:30 PM
Novice
100% Reliability
English
Advanced, Pro
Oct 15
12:00 AM – 1:30 AM
Novice
Reliability: N/A
English
Novice
Oct 15
11:00 AM – 12:30 PM
Novice
100% Reliability
English
Novice, Advanced, Pro
Oct 15
1:00 PM – 2:30 PM
Novice
67% Reliability
English
Novice, Advanced, Pro
Oct 15
2:00 PM – 3:30 PM
Novice
Reliability: N/A
English
Novice, Advanced, Pro
Oct 15
3:00 PM – 4:30 PM
Novice
Reliability: N/A
English, German
Novice, Advanced, Pro
Oct 16
7:00 AM – 8:30 AM
Advanced
Reliability: N/A
English
Advanced, Pro
Oct 16
8:00 AM – 9:30 AM
Advanced
100% Reliability
English
Pro
You did not find the right meeting?
Find more meeting invitations on our meeting board and post your own suggestion.

👉  Want to take it a step further? Connect with our experienced coaches.

Coach Annika intro video. Visit their profile to find more information in text.
Annika
USD 179 / h
5.0
67 Coachings
10% off first session | ex-Bain | MBB Coach | ICF Coach | HEC Paris MBA | 13+ years experience
Coach Gero intro video. Visit their profile to find more information in text.
Gero
USD 549 / h
5.0
105 Coachings
Ex-BCG │200+ Interviews & Interview Coachings @ BCG │ 25+ candidates coached into MBB │WHU/LSE/Nova │ Teacher & Trainer
Coach Moritz intro video. Visit their profile to find more information in text.
Moritz
USD 279 / h
5.0
264 Coachings
Ex-McKinsey interviewer, genuinely invested in you | 100% McKinsey case & PEI prep turning nerves into real confidence
Coach Irene intro video. Visit their profile to find more information in text.
Irene
USD 149 / h
5.0
9 Coachings
BCG consultant & MIT MBA | Supported 20+ students for MBBs or MBA
Coach Ian intro video. Visit their profile to find more information in text.
Ian
USD 399 / h
5.0
1,180 Coachings
Ex-BCG | NYU Stern | MBB, Tech, & Strategy Coach | 5,000+ Sessions | 500+ Offers | 1,000+ Candidates | 100+ Countries
Coach Giulia intro video. Visit their profile to find more information in text.
Giulia
USD 189 / h
5.0
91 Coachings
McKinsey | 6+ years in Consulting + Health Tech |Certified High Performance + Systemic Coach | Women Empowerment
Coach Zoe intro video. Visit their profile to find more information in text.
Zoe
USD 149 / h
0.0
0 Coachings
Former BCG Associate | 50% off first case interview prep diagnostic call
Coach ALEXANDRE intro video. Visit their profile to find more information in text.
ALEXANDRE
USD 169 / h
5.0
35 Coachings
FREE INTRO I exMcKinsey EM I exKearney consultant I High Success Rate I Official Coach for HEC (160 coachees in 2022/23)
Coach Marco intro video. Visit their profile to find more information in text.
Marco
USD 149 / h
5.0
43 Coachings
MBA | Product expert for Tech companies: fintech, marketplace, logistics | Former Strategy& and KPMG Advisory
Coach Florian intro video. Visit their profile to find more information in text.
Florian
USD 399 / h
5.0
1,509 Coachings
1600 5-star reviews across platforms | 700+ offers | Highest-rated case book on Amazon | Uni lecturer in US, Asia, EU

Also, think like an entrepreneur in daily life. Observe companies, analyze new strategies, and reflect on what drives success or failure. The more often you go through this process, the sharper your business intuition becomes – and that’s what sets you apart in interviews.
 

Key Takeaways

Business sense is one of the most important success factors in both consulting and case interviews. It reflects your ability to quickly recognize economic patterns, form sound assumptions, and make realistic, client-oriented decisions. In interviews, what sets top candidates apart isn’t memorized theory but the ability to see the bigger picture: understanding what really matters to a business, prioritizing strategically, and proposing solutions that are both practical and value-driven.

To demonstrate your business sense, it’s crucial to clearly define the objective of the case, develop plausible hypotheses, assess potential actions not only analytically but also from a business standpoint, and interpret numbers within the correct context. Your final recommendation should be not just logical, but economically viable and well thought through.

The good news is that business sense can be learned. By regularly reading business news, reflecting on strategic decisions, working through case interviews critically, and actively seeking feedback, you’ll build a strong foundation in economic thinking. Over time, this mindset will not only boost your interview performance but also set you up for long-term success in consulting.

Let's Move On With the Next Articles:

Presentation and Communication
Consulting Skills & Preparation
The majority and the most obvious part of preparation is, of course, the substantive preparation for your case interview. However, you also need to present what you have learned in a way that gives your interviewer an impression of your personality and character. This means that you must appear confidentand communicate clearly and precisely. The best preparation is useless if you come across as closed-off and insecure. As a consultant, you must always appear trustworthy and confident when interacting with clients to be taken seriously and to enable you and your team to work in a solution-oriented manner. This is already tested in the case interview – albeit indirectly ;)
To the article
General Knowledge
Consulting Skills & Preparation
In case interviews, having solid general knowledge can make a big difference, especially in market sizing questions. Knowing basic facts about regions, population sizes, and economic indicators helps you build stronger arguments. It’s not just about the analysis itself but also about showing interviewers that you understand global trends and can quickly process key information — an important skill in consulting. In a case interview, quick and accurate estimates are essential. For example, if you're asked to evaluate the potential market for a product in a specific country, having solid data — like the population size — is crucial. Without this information, it can be challenging to make a meaningful calculation. In addition to national market data, it's important to know about key global markets. Being familiar with major economic regions like the U.S., China, and the EU is valuable because large consulting firms such as McKinsey and BCG operate extensively in these areas. A solid understanding of these regions shows that you can think about global factors and helps you stand out from other candidates. What Your Knowledge of Population, Economy & Geography Says About You Having strong general knowledge in specific areas not only shows that you are well-prepared, but also that you can quickly understand economic relationships—a crucial skill in consulting. When you have information like population sizes or a country's Gross Domestic Product (GDP) at your fingertips, you can quickly verify assumptions and make informed decisions, which is exactly what case interviews expect. Additionally, your knowledge of these topics demonstrates a genuine interest in world affairs and your ability to recognize and understand global trends. This insight is vital for evaluating how political, economic, and social changes affect businesses. It also highlights your capability to absorb and use complex data effectively. Population Country/Region Population (approx.) Worldwide 8.05 billion China 1.426 billion India 1.419 billion Europe (EU states) 450 million USA 335 million Indonesia 277 million Brazil 203 million Russia 143 million Japan 124 million Germany 83 million UK 68 million GDP Forecast in USD for 2024 Country/Region GDP 2024 (approx. in trillions USD) Worldwide 105 trillion USD USA 25 trillion USD China 18 trillion USD Japan 4.3 trillion USD Germany 4.5 trillion USD France 3.0 trillion USD UK 3.1 trillion USD India 3.9 trillion USD Italy 2.2 trillion USD Brazil 2.1 trillion USD Canada 2.2 trillion USD Key Data to Know for Your Case Interview In case interviews, making quick and accurate estimates is key. A good grasp of units, along with basic fraction and percentage calculations, is essential for working efficiently. Additionally, being comfortable with time units is important for making rough estimates and calculations. The table of larger and smaller time units below provides a handy overview of commonly needed values. These fundamental skills help you tackle tasks confidently and quickly. Overview of Time Conversions: Days, Weeks and Hours Larger Units Smaller Units Days/Year 365 days (In leap years: 366 days) Days/3 Years 1,095 days Days/4 Years 1,461 days (including 1 leap year) Weeks/Year 52 weeks Hours/Week 168 hours Seconds/Hour 3,600 seconds Conversion of Fractions to Percentages and Decimal Values Fraction Percentage Decimal 1/5 20% 0.20 1/6 16.67% 0.1667 1/7 14.29% 0.1429 1/8 12.5% 0.125 1/9 11.11% 0.1111 1/10 10% 0.10 1/11 9.09% 0.0909 1/12 8.33% 0.0833 1/13 7.69% 0.0769 1/14 7.14% 0.0714 1/15 6.67% 0.0667 1/16 6.25% 0.0625 1/17 5.88% 0.0588 1/18 5.56% 0.0556 1/19 5.26% 0.0526 1/20 5% 0.05 Remember, it’s not enough to just memorize these numbers—you also need to be able to calculate with them effectively! Use our Mental Math Tool to specifically train your math skills and prepare for your next interview.
To the article
Preparation Plan
Consulting Skills & Preparation
Preparing for a case interview can feel overwhelming, but having a structured plan will help you stay focused and make steady progress. A well-organized approach ensures you build a strong foundation, practice effectively, and refine your skills before the big day. In this guide, we will walk you through the key components of an effective practice plan, including self-study, peer practice, and working with a coach. Let’s go!
To the article