If the average (arithmetic mean) of the 4 numbers n + 2, 2n - 3, 4n + 1, and 7n + 4 is 15, what is the value of n? - The Beat The GMAT Forum

If the average (arithmetic mean) of the 4 numbers n + 2, 2n - 3, 4n + 1, and 7n + 4 is 15, what is the value of n?

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BTGModeratorVI: Legendary Member; Posts: 1223; Joined: Sat Feb 15, 2020 2:23 pmFollowed by: 1 member

by BTGModeratorVI » Tue Dec 15, 2020 6:57 am

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If the average (arithmetic mean) of the 4 numbers n + 2, 2n - 3, 4n + 1, and 7n + 4 is 15, what is the value of n?

A. 11/4
B. 4
C. 32/7
D. 11
E. 13

Answer: B
Source: official guide

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Source: Beat The GMAT — Problem Solving | Tue Dec 15, 2020 6:57 am

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