Case Type: estimate or guesstimate.
Consulting Firm: Roland Berger Strategy Consultants first round summer internship interview.
Industry Coverage: restaurant & food services.
Case Interview Question #00460: How many individual French fries does McDonald’s (NYSE: MCD) sell in the United States each year?
Possible Solution:
This is a simple estimation/guesstimate case. While it goes without saying that the candidate should come up with a final number, 
it is more important for the candidate to show his/her way of analytical thinking and structured problem solving. One of the many possible approaches to crack this case could be: Total number of individual French fries McDonald’s sell = Number of McDonald’s restaurants in the U.S. * Number of fries sold per restaurant.
1. Number of McDonald’s restaurants
The total number of McDonald’s stores in the U.S. = Average number of stores per city or town * number of cities/towns in the U.S.
