求教~~！

sierrapan · 发表于 2009-11-14 15:52:30

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?

100p / (125 - p )

150p / (250 - p )

300p / (375 - p )

400p / (500 - p )

500p / (625 - p )
怎么得出选D

求教~~！

所属分类: GMAT考试

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