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标题: GWD4-29 [打印本页]

作者: lemonees 时间: 2005-9-12 12:59 标题: GWD4-29

Q29:

The annual rent collected by a corporation from a certain building was x percent more in 1998 than in 1997 and y percent less in 1999 than in 1998. Was the annual rent collected by the corporation from the building more in 1999 than in 1997?

(1) x > y

(2) ATH connecttype="rect" gradientshapeok="t" extrusionok="f">ATH>

xy/100

< x – y

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.

作者: himba 时间: 2005-9-12 19:40

从原题中可以推出：

设97年的租金为m

那么98年租金为m(1+x/100)

99是m(1+X/100)(1+Y/100)

如果要m(1+X/100)(1+Y/100)>m

才符合题意

那么(1+X/100)(1+Y/100)>1

x/100-y/100-xy/10000>0

可以推出x-y>xy/100

刚好是第二项就行

可以反推

作者: lemonees 时间: 2005-9-17 19:10

版主牛。谢谢版主！！！！

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