【GMAT考满分数据洞察DS题库】What is the sum of x, y, and _真题_答案

题目内容

What is the sum of x, y, and z?

(1) $x : y : z = 3 : 8 : 9$

(2) $y - x = 20$

AStatement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
BStatement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
CBOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
DEACH statement ALONE is sufficient.
EStatements (1) and (2) TOGETHER are not sufficient.

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正确答案: C

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