推 yesican:感謝! 07/24 16:32
※ 引述《yesican (yeah)》之銘言：
: 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 ?
: 題目看不太懂
: 答案是 [(100(k-m))/(100+m)] %
: what does the question mean?
PE ratio=price/eps(每股價格/每股盈餘)
假設原本的PE ratio為P/E, 所以新的PE ratio=[(100+K)/(100+M)]*(P/E)
它是問你PE增加率
所以增加率為[新的PE ratio-舊的PE ratio]/舊的PE ratio
=[(100+K)/(100+M)]-1
=(K-M)/(100+M)
轉換成%就是答案
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※ 編輯: flac 來自: 118.168.80.163 (07/24 14:00)