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标题: 请教GWD5-29 [打印本页]

作者: michellemove    时间: 2006-2-21 07:23     标题: 请教GWD5-29

Leo can buy a certain computer for p1 dollars in State A, where the sales tax is t1 percent, or he can buy the same computer for p2 dollars in State B, where the sales tax is t2 percent. Is the total cost of the computer greater in State A than in State B?

(1) t1 > t2

(2) p1t1 > p2t2

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.

答案是E

我选了C


作者: himba    时间: 2006-2-21 07:39

需要知道p1+p1t1p2+ p2t2的大小关系~~

因为条件1+2合起来,并不能证明p1p2之间的大小关系

所以答案E是没有错的~


作者: michellemove    时间: 2006-2-22 20:07

谢谢版主!!!!!




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