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标题: 请教一道DS，觉得答案不太对 [打印本页]

作者: meteor880826 时间: 2009-4-28 19:52
标题: 请教一道DS，觉得答案不太对

Q30:

Joanna bought only $0.15 stamps and $0.29 stamps. How many $0.15 stamps did she buy?

(1) She bought $4.40 worth of stamps.

(2) She bought an equal number of $0.15 stamps and $0.29 stamps.

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D,我觉得这个好像不对,应该选C嘛，大家看看咧

作者: h5641 时间: 2009-4-28 20:12
我也錯了這題

4.40 = 0.29 * 10 + 0.15 * 10

所以各買10張

只能這個組合所以滿足~

作者: forgivenever 时间: 2009-4-28 21:52
A 足以，有票数必须为整数

作者: meteor880826 时间: 2009-4-29 10:08
明白咯~嘿嘿~看来做题要细心~谢谢啦

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