Last year the price per share of Stock X increased by k percent and the earnings per share of Stock X increased by m percent, where k is greater than m. By what percent did the ratio of price per share to earnings per share increase, in terms of k and m? 有人能帮忙解答一下吗？
price x; earning y 前年：ratio of price to earning is x/y 去年：price 变成x(1+K), earning 变成 y (1+m)；ratio of price to earning is [x(1+K)]/[y (1+m)] 问去年比前年这个比例长了多少，俩式子一减
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发表于 2010-6-3 23:21:37
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