Of 110 customers at a restaurant, 63 order hamburgers and 71 order French fries...

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AAPL: Moderator; Posts: 2672; Joined: Sun Oct 29, 2017 2:08 pmFollowed by: 2 members

by AAPL » Tue Jan 28, 2020 4:42 am

Princeton Review

Of 110 customers at a restaurant, 63 order hamburgers, and 71 order French fries. If 22 customers order neither hamburgers nor French fries, how many customers order both hamburgers and French fries?

A. 8
B. 30
C. 31
D. 46
E. 88

OA D

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Source: Beat The GMAT — Problem Solving | Tue Jan 28, 2020 4:42 am

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Scott@TargetTestPrep: GMAT Instructor; Posts: 8177; Joined: Sat Apr 25, 2015 10:56 amFollowed by: 29 members; Location: Los Angeles, CA; Thanked: 43 times

Re: Of 110 customers at a restaurant, 63 order hamburgers and 71 order French fries...

by Scott@TargetTestPrep » Sun Feb 02, 2020 10:01 am

AAPL wrote: ↑
Tue Jan 28, 2020 4:42 am
Princeton Review

Of 110 customers at a restaurant, 63 order hamburgers, and 71 order French fries. If 22 customers order neither hamburgers nor French fries, how many customers order both hamburgers and French fries?

A. 8
B. 30
C. 31
D. 46
E. 88

OA D

We can create the equation:

110 = 63 + 71 - b + 22

110 = 156 - b

46 = b

Answer: D

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