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标题: 1道JJ,多谢 [打印本页]

作者: yiyi20 时间: 2002-12-17 23:11 标题: 1道JJ,多谢

From the beginning of last year, Price per share increased K percent.
Earning per share increased M percent.
Question: ask the ratio in percentage for price per share to earning
per share in increase. In term of K, M.
能帮忙分析一下思路吗?,觉得题目就看不太明白.

作者: suse 时间: 2002-12-18 00:01

注意问价格与收益比的增加百分数。
[x(1+k%)/y(1+m%)-x/y]/x/y,
=(1+k%)/(1+m%)-1
这样比较容易理解。

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