作者htbk (小小艾佛森)
看板GMAT
標題[問題]GWD數學問題
時間Mon Aug 25 15:19:09 2008
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 newspaperA, which of the following expresses r in terms of p?
答案:400p/(500-p)
這題從第３句後半段if開始我看不太懂題意
希望能有好心人士幫我解答這題的關鍵
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1F：推 andyhu2001:r應該是代表A所佔的收入比例 08/25 15:28
2F：→ andyhu2001:p代表A銷售的份數比例 08/25 15:28
3F：推 flac:問r與p的關係 r=?p 08/25 15:31