【GMAT考满分数学PS题库】If the average (arithmetic mean) of a and b is j, _真题_答案_解析 GMAT考满分官网

Magoosh - 数学PS - 129

题目内容

If the average (arithmetic mean) of a and b is j, and the average of c, d, and e is k, what is the average of a, b, c, d, e and j ?

A$${2k+3j}\over{6}$$
B$${k+2j}\over{3}$$
C$${k+j}\over{2}$$
D$${2k+3j}\over{5}$$
E$${k+2j}\over{4}$$

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正确答案: C

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