国际顶尖MBA申请交流平台--TOPWAY MBA

标题: TT 1-Q3 [打印本页]

作者: rabbitbugs 时间: 2006-10-27 06:40 标题: TT 1-Q3

Q3:

If x and y are positive, is 4x > 3y?

(1) x > y - x

(2) x/y < 1

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.

为什么答案是E？能告诉我吗？

（1）解出来是 2x > y , 因为是POSITIVE ，所以充分

（2）解出来是 x < y ，也充分啊，

为什么会是E，高人指点一下

作者: peiyangzhe 时间: 2006-10-27 19:25

（1）4x>2y

(2)4x<4y 不能得出4x>3y

作者: rabbitbugs 时间: 2006-10-29 20:06

thanks !!!

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