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请教一道数学题 (题目是不是有问题啊?)

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楼主
发表于 2008-5-3 15:02:00 | 只看该作者

请教一道数学题 (题目是不是有问题啊?)

Q19:

In
a survey of 200 college graduates, 30 percent said they had received
student loans during their college careers, and 40 percent said they
had received scholarships.  What percent of those surveyed said that they had received neither student loans nor scholarships during their college careers?

(1)   25 percent of those surveyed said that they had received scholarships but no loans.

(2)   50 percent of those surveyed who said that they had received loans also said that they had received scholarships.

                  

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(2)中会出现50 percent呢?因为它比30percent与40percent都大啊

 而且答案是D呢!意思就是说A,B都对,我只觉得A是对的呢。问问看大家怎么看呢?


    

沙发
发表于 2008-5-3 15:12:00 | 只看该作者

(1)和(2)说的是一个意思.

(2)里的50%是指得到贷款的30%里的50%,LZ仔细看选项就行了.

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