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Expert case by Francesco
Our client is a large American music company with a 40% market share and $20 billion in revenue. During the last holiday season, the client released fewer new tracks onto music streaming services compared to the year before. We would like you to figure out what could be causing t ... Our client is a large American music company with a 40% market share and $20 billion in revenue. During the last holiday season, the client released fewer new tracks onto musi ... (Open whole case)
6.1k
Times solved
5.0
< 100 Ratings
Intermediate
Difficulty
Expert case by Ian
Note: If you have not already done so, first work through the 1st part of this case: https://www.preplounge.com/en/management-consulting-cases/candidate-led-usual-style/intermediate/mbb-climate-change-operations-285This case is designed to show you how a case can evolve/change based on new informati ... Note: If you have not already done so, first work through the 1st part of this case: https://www.preplounge.com/en/management-consulting-cases/candidate-led-usual-style/intermediate/mbb-clim ... (Open whole case)
700+
Times solved
5.0
< 100 Ratings
Intermediate
Difficulty
Expert case by Ian
Sky China, a government-backed Chinese airline, has recently seen profits plummet due to COVID-19. Profits are down 80% in the months of February and March, but are showing early signs of a rebound in April. They've brought you in to first investigate what can be done immediatedly to prevent he ... Sky China, a government-backed Chinese airline, has recently seen profits plummet due to COVID-19. Profits are down 80% in the months of February and March, but are showing early signs of a ... (Open whole case)
7.6k
Times solved
4.3
100+ Ratings
Intermediate
Difficulty
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Expert case by Ian
Prompt The United States is currently facing a major supply chain crisis due to long ship queues and wait times at its West Coast ports, particularly at the Port of Los Angeles. Docks are at maximum capacity, and the system is at a breaking point. The government has reached out to you to help f ... Prompt The United States is currently facing a major supply chain crisis due to long ship queues and wait times at its West Coast ports, particularly at the Port of Los Angeles. Docks a ... (Open whole case)
1.2k
Times solved
1.5
< 100 Ratings
Beginner
Difficulty
Expert case by Ian
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 rep ... 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 vuln ... (Open whole case)
2.3k
Times solved
5.0
< 100 Ratings
Intermediate
Difficulty
Expert case by Francesco
Our client is Party Burger, a restaurant chain in the US serving premium burgers and salads for lunch. They rely on the quality of their products to attract customers, and they are usually fully booked. However, reviews have pointed out that the service offered could be improved. Our client is conce ... Our client is Party Burger, a restaurant chain in the US serving premium burgers and salads for lunch. They rely on the quality of their products to attract customers, and they are usually f ... (Open whole case)
4.8k
Times solved
4.5
< 100 Ratings
Intermediate
Difficulty
Expert case by Cristian
Let’s assume our client is Poliglot, a popular language app. Poliglot is five years old, originally from the US, but available worldwide. The app currently offers the possibility of learning over twenty languages for free, with extra benefits (e.g., no ads, additional exercises) available to premium ... Let’s assume our client is Poliglot, a popular language app. Poliglot is five years old, originally from the US, but available worldwide. The app currently offers the possibility of learning ... (Open whole case)
3.1k
Times solved
4.6
< 100 Ratings
Intermediate
Difficulty
Expert case by Gaurav
Our client is an alloy wheels manufacturer based in China. The client is contemplating entering the US market. At this point of time, the client sells the wheels in the China market. In order to make the wheels for the US market, he will have to expand its production capacity. As a result, whether t ... Our client is an alloy wheels manufacturer based in China. The client is contemplating entering the US market. At this point of time, the client sells the wheels in the China market. In orde ... (Open whole case)
5.1k
Times solved
4.3
< 100 Ratings
Intermediate
Difficulty
Expert case by Hagen
ConsumerPackagingCo is a small, US-based consumer products packaging company that develops, produces, and sells plastic bags for storing sandwiches. The client currently owns one production line.Since demand for their plastic bags exceeds production capacity, ConsumerPackagingCo wants to determine h ... ConsumerPackagingCo is a small, US-based consumer products packaging company that develops, produces, and sells plastic bags for storing sandwiches. The client currently owns one production ... (Open whole case)
10.5k
Times solved
2.5
< 100 Ratings
Intermediate
Difficulty
Your client is a Franchisee of a popular Steakhouse-chain in Germany. The Franchisee currently owns 2 Steakhouse-restaurants and wants you to investigate how well these perform and if there is any way for improvement? Your client is a Franchisee of a popular Steakhouse-chain in Germany. The Franchisee currently owns 2 Steakhouse-restaurants and wants you to investigate how well these perform and if there is any way for improvement? (Open whole case)
7.6k
Times solved
4.4
200+ Ratings
Advanced
Difficulty
Your client is Well Being (WB), a private healthcare company based in Germany.  Well Being operates 10 hospitals in Germany (in comparison to 1,000 public hospitals). These hospitals are normally half the size of the public ones and are not providing Accident and Emergency (ER).Revenue comes fr ... Your client is Well Being (WB), a private healthcare company based in Germany.  Well Being operates 10 hospitals in Germany (in comparison to 1,000 public hospitals). These hospitals ar ... (Open whole case)
28.8k
Times solved
4.3
2.0k Ratings
Intermediate
Difficulty
Your client, Bookl, is a publishing company with stable sales in terms of both volume and price.Its distribution warehouse is reaching maximum capacity. This has lowered its service quality.The head of Bookl’s distribution department wants to extend the warehouse. The extension will cost $15 m and w ... Your client, Bookl, is a publishing company with stable sales in terms of both volume and price.Its distribution warehouse is reaching maximum capacity. This has lowered its service quality. ... (Open whole case)
12.4k
Times solved
4.1
300+ Ratings
Intermediate
Difficulty
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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.

Cases about Capacity change

Capacity change

A Vast Selection of Management Consulting Cases

Our selection of case studies mirror the wide variety in real case interviews. Thus, you can solve challenging problems around market sizing, market-entry, pricing, or operations strategy. Moreover, all provided cases are marked with a level of difficulty and the respective case style. This will allow you to filter for interviewer-led (as used by McKinsey) and candidate-led cases. In addition, some of our corporate partners granted some great original cases that have been used in real interviews. Check them out to get some authentic insights about the real application process of top firms like Bain, Roland Berger, and many more. These cases are clearly indicated by the firm's logo.
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