Crack the most complicated case studies 

That is to say quantitative case studies, which come up every other time in a classical recruitment process

 Why this book needs to be a part of your preparation tools 

 Quantitative cases are the most challenging

 The book will enable you to tackle beforehand a selection of well-chosen cases in order to test your competitiveness regarding quantitative cases

 Quantitative cases represent 50% of the total cases

 Invariably in some firms like BCG, and present approximately every other time elsewhere, quantitative cases are simply essential !

 The practice of typical reasoning is essential

 By training yourself with this book, you will progressively gain quantitative reasoning reflexes to be successful on “D-Day”

  The content has been tested on hundreds of successful candidates   

 The impact of the content of this book on the candidates frankly impressed me. I explain why in the following sections

 You want to know more? Carefully read the following!

The quantitative cases, "pet hates" of candidates in consulting

A case study is already, by construction, a particularly stressing and complicated challenge to handle. But when the quantitative component is added, the test becomes squarely inextricable for many candidates. This is in direct response from candidates to demand that I write this book. It will enable you to climb the quantitative cases skills ladder in order to become competitive in the best firms. 

  • This book contains a selection of 8 quantitative cases with their full solution.
  • Of course, you won't find any of these cases in the other books and training on the site or anywhere else.  
  • After having done all the cases in the book, you will be prepared for the biggest challenge of the interviews in consulting firms!  

 It works! Here's something to prove it

I personally tested this method during my formation seminars at ESSEC. I wish to share with you a small anecdote about that     

  • I'm used to giving a specific case, built to drive the candidates into a corner in terms of quantitative skills 
  • Until now, this case has never been cracked by any candidate – I had given it to around 500 people
  • When I introduced for the first time the content of this book about quantitative cases at ESSEC this year, several students succeeded in resolving my “infeasible” case
  • For information, the seminar in question brought into play 50% of the content of the book 
  • Therefore, I have no doubts about the impact that this content will have on your performances during the interview! 

Let me introduce myself, I am Victor Mamou, former consultant at the Boston Consulting Group and also accepted at McKinsey. I am specialized in the preparation of recruitment interviews in consulting firms.

The book to crack the quantitative case studies is composed of 8 case studies especially developed to enable you to prevail over all the key questions asked in these types of cases. After your training, like my students from ESSEC, you will be competitive on that component! 

Here are the skills you will develop thanks to the 8 case studies fully corrected and contained in this book: 

Case study #1: Theme park and client mix

This case will enable you to test yourself on

  • Your ability to establish the hypothesis required to put business problems into equations
  • Your mastery of the classical equations concerning profitability in the case of a two revenue-channel business model
  • This case also enables you to juggle between relative and absolute quantities, which constitutes excellent training

Case study #2: A vinegar producer wishes to increase his margin

This case will enable you to test yourself on

  • The level of your quantitative data analysis concerning sales and costs
  • Your ability to move from unit to global parameters
  • Check if you fall into the most classical trap concerning margins
  • Your ability to successively reason in a well-organized manner on 3 product lines  

Case study #3: Ready-to-wear and financial impacts 

This case will enable you to test yourself on

  • Your mastery of the classical equations concerning costs
  • Your ability to deal with break-even point issues
  • Your proactivity to test the validity of your numerical results and to dose out the required level of details, depending on the question

Case study #4: Cost prices in a jam factory

This case will enable you to test yourself on

  • A puzzling case, that provides a great number of data to include in a classical consultant reasoning situation
  • Your ability to deal in a structured way with key issues of costs distribution that require common sense and a good comprehension of the business model of the company
  • Classical reasoning to link the productivity to the financial state of the company

Case study #5: Marginal costs of a bedding company

This case will enable you to test yourself on

  • Your apability to distance yourself from your calculations and equations
  • The way you need to build a simple hypothesis in order to make progress with reasoning and to make a critical analysis of these hypotheses afterwards – the analysis will be focused on the fixed and variable costs

Case study #6: Disinvestment in the retail sector

This case will enable you to test yourself on

  • A case on the borderline between the classical case, the calculatory case, McKinsey's PST and the Boston Consulting Group written case
  • Your ability to orient your calculation according to the needs of your client
  • A situation in which all the necessary information to solve the case is given (as with the BCG written case), the question is rather wide, in any case, it is less guided than the calculatory case questions (as in the “classical” cases), the case requires you to build a hypothesis from numbered facts (as in a calculatory case) and to give recommendations (as in PST)

Case study #7: Profitability of a foundry

This case will enable you to test yourself on

  • Your common sense concerning the use of the data at your disposal. Without giving you the game already, you will be confronted with a situation where a part of the information of the case proves to be partially unusable: therefore, you'll have to make a common sense reasoning in order to be able to answer the question
  • The finalization of your preparation on classical questions concerning the margin and the break-even point

Case study #8: Development of a rugby stadium

This case will enable you to test yourself on

  • The basic financial reasoning that every candidate needs to know in order to become a specialist
  • The finalization of your preparation on quantitative case studies, because this last exercise is absolutely representative of a genuine case    

Our references


This book will enable you to get an approach that has proven its worth to stand out from the other candidates in the most competitive component of case studies: the quantitative part.

What is the price of this book?

No long sale speech, I have decided to put this publication at the low price of $37 Dollars.

$37 Dollars, is roughly 5 minutes of consulting in a top-tier consulting firm.

You will need roughly ten hours of work to master the content developed in the book. If you seriously wish to join a consulting firm, this publication is what you need, because it will give you the reactions you have to acquire to succeed in quantitative interviews, which represent 50% of all the cases in consulting firms.


  • Secure payment

And what if the book doesn't suit me afterwards? 

I'm not used to creating disappointment for my clients. All my training contents are reimbursed within 30 days if you're not satisfied. Concerning the preparation to strategy consulting, I know the quality of my training, that's why there is the guarantee :)

To your success,

Victor Mamou

 2015 (c) All rights reserved.

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