作者htbk (小小艾佛森)
看板GMAT
标题[问题]GWD数学问题
时间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)
这题从第３句後半段if开始我看不太懂题意
希望能有好心人士帮我解答这题的关键
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1F：推 andyhu2001:r应该是代表A所占的收入比例 08/25 15:28
2F：→ andyhu2001:p代表A销售的份数比例 08/25 15:28
3F：推 flac:问r与p的关系 r=?p 08/25 15:31