It mentions 300 sales per day decreased by 10% after removing 3 prep items? But the calculation shows 300*(1-30%) ? Am I missing something?
Back to overview
24
300 sales per day decreased by 10% after removing 3 prep items?
2
2.3k
Be the first to answer!
Nobody has responded to this question yet.
Top answer
Ian
on May 6, 2021
Coach
Ex-BCG | NYU Stern | MBB, Tech, & Strategy Coach | 5,000+ Sessions | 500+ Offers | 1,000+ Candidates | 100+ Countries
Hi Chris,
While I haven't solved this case, I note the following text right above the suggested math of 300*(1-30%):
"We know that if we take out 1 prep item from the dish, we would decrease cost/revenue ratio by 5 percentage points, but the sales/day would also decrease by 10%"
It states sales per day decrease 10% for ONE, not three prep items!
0 comments
Want to learn more about this topic or join the discussion?
Sign up for free with PrepLounge and get access to first-hand insights from consulting experts, practical resources for your consulting interview preparation and an international community of candidates. Join the world’s largest case interview community.
Clara
on May 6, 2021
Coach
McKinsey | Awarded professor at Master in Management @ IE | MBA at MIT |+180 students coached | Integrated FIT Guide aut
Hello!
I believe there is a typo, since that 30% does not make sense to me.
Cheers,
Clara
Similar Questions
Most Popular Posts
How did you prepare for your first case competition?
9
on Oct 30, 2026
Canada
4
200+
Top answer by
Ashwin
Coach
Ex-Bain | Help 500+ aspirants secure MBB offers
4 Answers
200+ Views
+1
Age limit
11
on Oct 30, 2026
Middle East
8
300+
Top answer by
Yasser
Coach
Ex-RB Project Manager | Led resume screening and interview team | GCC Local
8 Answers
300+ Views
+5
PhD grad aiming for MBB (UK): will taking a job before the next cycle affect my eligibility for Associate roles?
9
on Oct 30, 2026
UK
5
200+
Top answer by
Ian
Coach
Ex-BCG | NYU Stern | MBB, Tech, & Strategy Coach | 5,000+ Sessions | 500+ Offers | 1,000+ Candidates | 100+ Countries
5 Answers
200+ Views
+2
McKinsey R1 Middle East
24
on Oct 31, 2026
Global
11
400+
Top answer by
Ashwin
Coach
Ex-Bain | Help 500+ aspirants secure MBB offers
11 Answers
400+ Views
+8
BCG R1 Results - How Long Does It Usually Take to Hear Back?
9
on Oct 31, 2026
Canada
7
300+
Top answer by
Ashwin
Coach
Ex-Bain | Help 500+ aspirants secure MBB offers
7 Answers
300+ Views
+4