GWD数学第一套13

stella1220 · 发表于 2012-8-21 05:56:47

If x and y are positive, is 3x > 7y?
(1) x > y + 4
(2) -5x < -14y

A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D. EACH statement ALONE is sufficient.
E. Statements (1) and (2) TOGETHER are NOT sufficient.

答案选B。

herocrhatm · 发表于 2012-8-21 11:29:03

-5x < -14y——5x >14y——2.5x>7y
x是positive，所以3x>2.5x>7y

GWD数学第一套13

所属分类: GMAT考试

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