Helen, Jim, and Ivan each purchased some books at a bookstore. Helen purchased 4 books and Jim purchased 1 book. If the

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Helen, Jim, and Ivan each purchased some books at a bookstore. Helen purchased 4 books and Jim purchased 1 book. If the 3 people purchased an average (arithmetic mean) of 2 books per person, how many books did Ivan purchase?

A. 1
B. 2
C. 3
D. 4
E. 5

Answer: A

Source: GMAT Prep
Source: — Problem Solving |