求助一到GWD数学题~~

byronkeith

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 B, 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)

byronkeith

有没有人帮忙一下啊？不甚感激。

byronkeith

这题坑爹啊

byronkeith

“if p percent of the newspapers that the store sold were copies of newspaper B”中的“B”应该是“A”，刚上了manhattan gmat问，上面都是说"A"。中国论坛的此题都是“B”，怪不到算不出答案。

isariverson

你题抄错拉，原题是：
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(not B), which of the following expresses r in terms of p?