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标题: 请问GWD3 Q18 [打印本页]

作者: sunflower88 时间: 2011-3-4 07:02 标题: 请问GWD3 Q18

Q18:

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?

A.k/m %

B.(k-m) %

C.[100(k-m)]/(100+k) %

D.[100(k-m)]/(100+m) %

E.[100(k-m)]/(100+k+m) %
请问这题是什么意思啊？
结果是怎么算出来的？

作者: Fadaways 时间: 2011-3-4 21:44

Category  2009 2010
price          p    (100+k)% * p
earning       e    (100+m)% * e
p/e             p/e [(100+k)/(100+m)] * [p/e]

percentage increase in p/e ratio = 100% * {[(100+k)/(100+m)] * [p/e] - [p/e]} / [p/e]
                                             = 100%* [(100+k)/(100+m) - 1]
                                             = 100% * [(k-m)/(100+m)]

作者: williams 时间: 2011-3-5 08:53

主要还是看题得看懂啊数学一般难不倒咱们天国学生。。。

作者: sunflower88 时间: 2011-3-6 14:22

哦。。。明白了~~
愣是没看懂题目！

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