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Company case by E.ON Inhouse Consulting
Climate change has become one of the biggest challenges in the 21st century, and with roughly 75% of all CO₂ emissions coming from energy, this sector plays a key role in the transition to a reduced carbon footprint. E.ON has taken up on the challenge to promote more sustainable and efficient energy ... Climate change has become one of the biggest challenges in the 21st century, and with roughly 75% of all CO₂ emissions coming from energy, this sector plays a key role in the transition to a ... (Open whole case)
3.2k
Times solved
4.4
< 100 Ratings
Intermediate
Difficulty
Company case by Bain & Company
Our client BeautyCo is a large European perfumery company with over 1,000 shops across Europe. However, BeautyCo has been struggling with declining 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 c ... Our client BeautyCo is a large European perfumery company with over 1,000 shops across Europe. However, BeautyCo has been struggling with declining profitability for some time and would like ... (Open whole case)
14.2k
Times solved
3.6
< 100 Ratings
Beginner
Difficulty
As one of three management consultants with many years of experience, you have SET yourself the goal of founding your own management consultancy. The topics, contents and solution offering with which you can advise and support potential customers are clear. The legal company is already founded and r ... As one of three management consultants with many years of experience, you have SET yourself the goal of founding your own management consultancy. The topics, contents and solution offering w ... (Open whole case)
4.8k
Times solved
3.3
< 100 Ratings
Beginner
Difficulty

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Your client tk Commodity Trade (tk ComT) is a global materials trader - they buy and sell raw materials. tk ComT had stable EBITDA margins in recent years. They consider expanding their target market and entering the Lithium (electric vehicle battery grade) trade, due to the current high demand for ... Your client tk Commodity Trade (tk ComT) is a global materials trader - they buy and sell raw materials. tk ComT had stable EBITDA margins in recent years. They consider expanding their targ ... (Open whole case)
12.2k
Times solved
4.0
< 100 Ratings
Advanced
Difficulty
Company case by RWE Consulting
RWE has reliably supplied people and companies with electricity for more than 120 years with activities around the world with a clear focus on growth. The company is pushing the energy transition to climate neutrality with focus on renewable energy sources like offshore or onshore wind as well as ph ... RWE has reliably supplied people and companies with electricity for more than 120 years with activities around the world with a clear focus on growth. The company is pushing the energy trans ... (Open whole case)
15.6k
Times solved
3.1
< 100 Ratings
Intermediate
Difficulty
As a consultant at Mercedes-Benz Management Consulting, you are actively shaping the future of 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 you ... As a consultant at Mercedes-Benz Management Consulting, you are actively shaping the future of mobility. While you are contributing to decisive projects that design the future of the world’s ... (Open whole case)
17.7k
Times solved
3.8
100+ Ratings
Intermediate
Difficulty
Company case by Roland Berger
Onlinestar, an online retailer of furniture and garden products (core business), has grown significantly in recent years as a result of an expansion of its product portfolio. The company mainly imports goods from Chinese manufacturers but also operates its own production of cat lavatories (special b ... Onlinestar, an online retailer of furniture and garden products (core business), has grown significantly in recent years as a result of an expansion of its product portfolio. The company mai ... (Open whole case)
90.7k
Times solved
4.3
1.1k Ratings
Intermediate
Difficulty
Company case by EY-Parthenon
A leading online real estate marketplace in Germany – your-new-home.com – is struggling with stagnating sales after many years of high growth rates. In a preliminary project with EY-Parthenon, the market environment has already been examined in detail – competitors, new entrants, customer needs, etc ... A leading online real estate marketplace in Germany – your-new-home.com – is struggling with stagnating sales after many years of high growth rates. In a preliminary project with EY-Partheno ... (Open whole case)
69.5k
Times solved
4.3
1.4k Ratings
Intermediate
Difficulty
Company case by zeb Consulting
The bank "His Earlship Charles", a domestic retail and private bank is in a difficult situation. Profits have been declining over the past years due to the ongoing low interest rates set by the central bank. Additionally, the bank is suffering from a decreasing number of customers. The board of dire ... The bank "His Earlship Charles", a domestic retail and private bank is in a difficult situation. Profits have been declining over the past years due to the ongoing low interest rates set by ... (Open whole case)
72.8k
Times solved
4.3
4.5k Ratings
Advanced
Difficulty
Company case by Oliver Wyman
I’m thinking about setting up a wine cellar in my basement. The way I see it, shelf space would be divided into two sections: (1) a “drinking” section where I store bottles for my own consumption and (2) an “investment” section where I store bottles that I intend to sell at a profit after they ... I’m thinking about setting up a wine cellar in my basement. The way I see it, shelf space would be divided into two sections: (1) a “drinking” section where I store bottles for my own consum ... (Open whole case)
103.2k
Times solved
4.1
3.7k Ratings
Beginner
Difficulty
Company case by Oliver Wyman
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 r ... 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 ... (Open whole case)
73.5k
Times solved
4.4
4.6k Ratings
Beginner
Difficulty
Expert case by Dennis
A large natural gas field is unexpectedly discovered on the Mediterranean island of Corsica. The gas can be accessed and produced relatively easily and is of good quality. Europe, and especially Germany as the largest gas consumer in the EU, is looking for alternative gas suppliers to reduce its one ... A large natural gas field is unexpectedly discovered on the Mediterranean island of Corsica. The gas can be accessed and produced relatively easily and is of good quality. Europe, and especi ... (Open whole case)
< 100
Times solved
0.0
< 100 Ratings
Beginner
Difficulty
Expert case by Francesco
Our client today is AirService – a service provider for a number of airlines and airports. Their management recently realized a decrease in profits that is linked to increasing costs.Accordingly, they have engaged our firm to help address this issue. How would you approach this problem? Our client today is AirService – a service provider for a number of airlines and airports. Their management recently realized a decrease in profits that is linked to increasing costs.Accordingly, they have engaged our firm to help address this issue. How would you approach this problem? (Open whole case)
7.0k
Times solved
5.0
< 100 Ratings
Intermediate
Difficulty
Expert case by Dennis
Your client is Alistair, a brew master from the east coast of the United States. He has developed a beer recipe he believes will revolutionize the beer drinking experience in the US. Alistair was able to convince his family and friends to invest in his business idea after letting them taste a sample ... Your client is Alistair, a brew master from the east coast of the United States. He has developed a beer recipe he believes will revolutionize the beer drinking experience in the US. Alistai ... (Open whole case)
200+
Times solved
0.0
< 100 Ratings
Beginner
Difficulty
Expert case by Ben
Pedal Pals is an interactive fitness platform with millions of members, offering connected, technology-enabled fitness classes that utilize its proprietary hardware, the Pedal Pal stationary bicycle. Pedal Pals generates strong recurring revenue from its members, who pay subscription fees to access ... Pedal Pals is an interactive fitness platform with millions of members, offering connected, technology-enabled fitness classes that utilize its proprietary hardware, the Pedal Pal stationary ... (Open whole case)
100+
Times solved
0.0
< 100 Ratings
Intermediate
Difficulty
Expert case by Ben
Your client is Hogwarts University. Their President, Dr. Albus Dumbledore, is concerned with the university’s profitability and needs your help in determining the best course of action. Your client is Hogwarts University. Their President, Dr. Albus Dumbledore, is concerned with the university’s profitability and needs your help in determining the best course of action. (Open whole case)
100+
Times solved
0.0
< 100 Ratings
Intermediate
Difficulty
Expert case by Agrim
Our client is a pharmacy in Dubai - called NewWave Pharmacy. This pharmacy wants to start a new & unique delivery service and want to understand if it is a good idea or not? If yes, then how should they price it? And how should they start it? Our client is a pharmacy in Dubai - called NewWave Pharmacy. This pharmacy wants to start a new & unique delivery service and want to understand if it is a good idea or not? If yes, then how should they price it? And how should they start it? (Open whole case)
600+
Times solved
0.0
< 100 Ratings
Advanced
Difficulty
Expert case by Ian
Our client, Vets2U, a well-established organization that runs ten Mobile Veterinary Clinics (MVC) in the US, has witnessed a concerning trend of stagnant revenues of $100M over the past few years. In light of this issue, the CEO of Vets2U has brought us in with the goal of increasing revenues by 25% ... Our client, Vets2U, a well-established organization that runs ten Mobile Veterinary Clinics (MVC) in the US, has witnessed a concerning trend of stagnant revenues of $100M over the past few ... (Open whole case)
1.2k
Times solved
4.6
< 100 Ratings
Intermediate
Difficulty
Expert case by Ian
A startup company specializing in last mile delivery with drones is determined to reach $20M in revenue while also becoming profitable. The company's innovation lies in leveraging drone technology to revolutionize the logistics sector, specifically focusing on last-mile delivery, which accounts for ... A startup company specializing in last mile delivery with drones is determined to reach $20M in revenue while also becoming profitable. The company's innovation lies in leveraging drone tech ... (Open whole case)
1.7k
Times solved
5.0
< 100 Ratings
Advanced
Difficulty
Expert case by Ian
Our client is Korean Car Parts (KCP), a multi-national original equipment manufacturer (OEM) of car parts based in Korea. They've recently seen a decline in profits and have brought us in to understand how to address this falling profitability.==================================== ... Our client is Korean Car Parts (KCP), a multi-national original equipment manufacturer (OEM) of car parts based in Korea. They've recently seen a decline in profits and have b ... (Open whole case)
5.4k
Times solved
4.3
< 100 Ratings
Beginner
Difficulty
1 - 20 of 117 results

Any Open Questions Left? Check Out Our FAQ

What are cases?

Cases, also known as case studies, are business problems that a candidate is presented with during a case interview at a management consultancy. The challenge is to solve it under pressure and in a structured way.

Why are consulting cases so important for your preparation?

Consulting interviews are among the most competitive and difficult job interviews that exist. Interviewers use cases as an indicator to test whether you have what it takes to become a successful consultant. In order to pass, you need to ace the case interview part. And in order to ace the case interview part, you need to be well-prepared. Thus, practicing cases is one of the most important aspects of interview preparation in consulting. During different rounds of interviews you will have to solve cases again and again to prove your structured and analytical thinking as well as your communication skills.

How can I practice cases?

You can practice cases on your own and go through them to get a first feeling for the structure. Afterwards, you should go into a real interview environment and practice cases with other members on the platform. You will find more than 50 mock-interview requests on the Meeting Board every day, which you can easily accept. If there is nothing suitable on the Meeting Board, you can also use the Candidate Listing. Here you can find active members on the platform and send them a direct meeting request. If you want to take your case practice to the next level, we recommend you to schedule coaching sessions with our coaches who have many years of experience in helping candidates receive their dream job offer.

What is the difference between Candidate-led and Interviewer-led?

In an interviewer-led case interview, the interviewer leads through the conversation. This means that the interviewer asks specific questions and also controls the time you have to analyze and answer different questions and therefore the depth of your analysis. In contrast, the candidate-led style (which is more common) is about you taking the initiative as a candidate. The initial problem is given to you by your interviewer. Afterwards, you have the freedom to structure the case according to your ideas and to ask questions proactively in order to find a solution to the problem.

What are real cases?

Real cases in the PrepLounge Case Library are cases that were submitted by management consultancies and have been treated as such within the company. They were made available from the real interview process. In this way, you can gain deep insights into the requirements of the case interview with the respective top consultancies (e.g. Bain & Company, Roland Berger, Deloitte, Oliver Wyman). We have marked these cases with the corresponding company logo.

What are expert cases?

Expert cases were created by our PrepLounge coaches and either contain real problems that the experts have already dealt with in their lives as consultants or cases from actual consulting interviews they took part in. They offer you an optimal preparation through the different subjects, levels of difficulty and styles. And the best thing is: If you have questions about the cases, you can ask them directly to the authors.

What are video case solutions?

Video case solutions are cases in which we provide you with a solution that includes a YouTube video. With this we want to help you to understand case solutions even better.

What does the rating of the cases mean?

Every member has the possibility to rate a case and leave feedback on the case. This gives you the opportunity to call up a ranking and solve the cases that are particularly popular in the community. It also gives us the opportunity to continuously improve our cases in order to provide you with the best possible practice material.

Which are the most interesting cases on PrepLounge?

Which cases are most interesting for you depends on your personal preference and your level of knowledge. If you are just starting with the case interview preparation, beginner cases are probably the most interesting ones for you. You also have the possibility to filter by different categories, such as personal fit, market analysis or brain teaser and many more, in order to address exactly the topics that are most relevant for your application.

Profitability Analysis Cases – Browse our extensive Case Library

Solve our consulting cases focusing on profitability analysis, and invite other candidates to crack the case interactively with you. Practicing and getting feedback is the most crucial part of a perfect case preparation.

Consulting Cases: Profitability Analysis

In order to analyze the profitability in a case, you will have to calculate the revenue and costs of the organization. You can then use the outcome to propose management decisions such as reducing costs for loss making customers, increase sales in profitable locations or stop selling loss making products.

In case of doubt, you can always have a look at our detailed case solution. All provided cases are marked with a level of difficulty and the respective case style (McKinsey style or candidate-led). You can also find original cases from our corporate partners that have been used in real case interviews! These cases are clearly indicated by the firm's logo (e.g. Bain & Company, Roland Berger, Oliver Wyman, Deloitte). Check them out to get some authentic insights about the application process at the respective firm.
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