题目信息
Set S consists of integers 7, 8, 10, 12, and 13. If integer n is included in the set, the average (arithmetic mean) of set S will increase by 20%. What is the value of integer n?
A:10
B:12
C:16
D:22
E:24
参考答案及共享解析

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已选答案:
正确答案:
D:22
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题目来源
Manhattan