Wording of the problems

case math wording
New answer on Feb 29, 2020
6 Answers
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Anonymous A asked on Nov 15, 2019

Hi,

I'm struggling with questions such as: "Everything constant, by how much % should company X increase sales in Y category (all other categories kept constant) in order to reach the target growth rate. How can I work on such questions or in other words, what topic does this fall under?

Thank you so muchhh

Best

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Clara
Expert
Content Creator
replied on Dec 08, 2019
McKinsey | Awarded professor at Master in Management @ IE | MBA at MIT |+180 students coached | Integrated FIT Guide aut

Hello!

I would advise you GMAT quant questions for practicing these type of exercises. You can find many free trials for both exams and exercises in the internet (Veritasprep, London´s Business School MBA´s page, etc.)

However, the way your question is laid, seems more straight forward: for growing by 10%, your sales should grow by 10%, assuming everything else is the same.

Cheers!

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Kay
Expert
replied on Nov 18, 2019
McKinsey Junior Associate

Hi Anon,

It sounds like you are struggling to convert word problems into equations - this is pretty essential both in the interview stage of consulting, and on the job as well. It's great that you have identified this as a development need.

I would suggest practicing lots of word problems (e.g. GMAT preparation materials should provide some examples, or the McKinsey PST) and getting comfortable with writing formulas from word problems. There are a few formulas that you could "learn" to help with common types. If you are struggling, have a look at the GMAT solutions - these are usually very clear in terms of method.

As with many quantitative skills, this one gets better with practice!

Best of luck,

Kay

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Deniz
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replied on Nov 17, 2019
BCG | A.T. Kearney | University of Cambridge | 350+ coachees | 5+ years of consulting experience in London, Dubai and Istanbul

Hi,

This can fall under any category of the case topics. You can give yourself hypothetical examples for you to practice this kind of problems e.g. break-even analysis.

Best,

Deniz

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Vlad
Expert
Content Creator
replied on Nov 16, 2019
McKinsey / Accenture Alum / Got all BIG3 offers / Harvard Business School

Hi,

Not 100% sure that I understand your question. If you want to grow by 10%, your sales should grow by 10% (assuming everything else is the same)

Best

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Luca
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Content Creator
replied on Feb 29, 2020
BCG |NASA |20+ interviews with 100% success rate| 120+ students coached |GMAT expert 780/800 score

Hello,

You can practice with questions like these with SHL tests or GMAT.
Btw, the secret is to start from the target: grow revenues by Z%. The next step would be to calculate the absolute value of profit increase, P. Now, you have to achieve this surplus of profits increasing revenues from a specific category, Y. Considering this, your answer is simply P/Y.

Best,
Luca

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Michal replied on Feb 11, 2020

I guess that regular quick math practice is as important as p2p case interview sessions.

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Clara gave the best answer

Clara

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McKinsey | Awarded professor at Master in Management @ IE | MBA at MIT |+180 students coached | Integrated FIT Guide aut
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