During the case, I calculated that if the company wants to sell 50M, they need to basically capture ~13% (50 / 382) of the market size. However, during the case debrief, I kept wondering if I should do the calculation differently by adding the 50M to the denominator since the revenue is additional to the existing 382M. That would give us 50 / (382+50) = ~11%. What is wrong with the second calculation?
Back to overview
18
Anonymous A
on Mar 04, 2022
Global
Question about
Case
Calculate market share
2
2.5k
Be the first to answer!
Nobody has responded to this question yet.
Top answer
Ian
on Mar 04, 2022
Coach
Top US BCG / MBB Coach - 5,000 sessions |Tech, Platinion, Big 4 | 9/9 personal interviews passed | 95% candidate success
Hi there,
I understand your logic here, but fundamentally you're assuming that the market grows by 50M.
Your additional sales didn't just “appear”! Rather, they were “stolen” from other competitors.
Just remember, the market size is the market size. If you're going to sell x units in that market, the marker size doesn't change just because you entered (Unless you create demand like Tesla or Apple did). Rather, you're taking a % of the existing pie :)
0 comments
Pedro
on Mar 04, 2022
Coach
BAIN | EY-Parthenon | Roland Berger | Former Principal | FIT & PEI Expert
Since baby clothing is not exactly a new category and is a basic need, it is unlikely that you will create additional demand just from getting in the market… you will be taking market share from other players. So the first option is the correct one.
Similar Questions
Most Popular Posts
MBB London virtual interview dress code
8
on Feb 17, 2026
UK
6
100+
Top answer by
Alessandro
Coach
McKinsey Senior Engagement Manager | Interviewer Lead | 1,000+ real MBB interviews | 2026 Solve, PEI, AI-case specialist
6 Answers
100+ Views
+3
My mind goes blank when I try to brainstorm and come up with a framework
11
on Feb 18, 2026
Global
9
200+
Top answer by
Soheil
Coach
INSEAD | EM & Strategy Consultant | 3.5Y Consulting | 5★ Case Coach | 350+ Cases | 50+ Live Interviews | MBB-Level
9 Answers
200+ Views
+6
Would I be considered an experienced hire?
11
on Feb 18, 2026
UK
8
200+
Top answer by
Alessandro
Coach
McKinsey Senior Engagement Manager | Interviewer Lead | 1,000+ real MBB interviews | 2026 Solve, PEI, AI-case specialist
8 Answers
200+ Views
+5
Quitting Masters, Gap Year
8
on Feb 18, 2026
Global
5
100+
Top answer by
Kevin
Coach
Ex-Bain (London) | Private Equity & M&A | 12+ Yrs Experience | The Reflex Method | Free Intro Call
5 Answers
100+ Views
+2
Mckinsey Interviews
17
on Feb 18, 2026
Middle East
8
200+
Top answer by
Alessandro
Coach
McKinsey Senior Engagement Manager | Interviewer Lead | 1,000+ real MBB interviews | 2026 Solve, PEI, AI-case specialist
8 Answers
200+ Views
E
+5