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标题: [求助]涛涛GWD5 [打印本页]

作者: Sarah006 时间: 2006-8-5 10:32
标题: [求助]涛涛GWD5

Q28:

Last Sunday a certain store sold copies of Newspaper A for $1.00 each and copies of Newspaper B for $1.25 each, and the store sold no other newspapers that day. If r percent of the store’s revenues from newspaper sales was from Newspaper A and if p percent of the newspapers that the store sold were copies of newspaper A, which of the following expresses r in terms of p?

A. 100p / (125 – p)

B. 150p / (250 – p)

C. 300p / (375 – p)

D. 400p / (500 – p)

E. 500p / (625 – p)

答案是D

请指教

作者: yaoyao99 时间: 2006-8-5 14:28

http://forum.chasedream.com/dispbbs.asp?BoardID=22&ID=86812

Please include the question number in your subject line (e.g. TT GWD-xx-yy)

作者: silviaqiu 时间: 2006-8-5 15:28
这道题也是本月jj，你可以看一下jj的讨论帖

作者: Sarah006 时间: 2006-8-5 15:44

吼吼，感谢。

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