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?
B. (k – m) %
C. [100(k – m)] / (100 + k) %
D. [100(k – m)] / (100 + m) %
E. [100(k – m)] / (100 + k + m) %
Answer: D
快考试了, 请nn们帮帮忙
設the price per share of Stock X 為P
the earnings per share of Stock X為E
原始the ratio of price per share to earnings per share 就為P/E
當P增加k%,E增加m%, 則the ratio of price per share to earnings per share increase變為P(1+k%)/E(1+m%)
By what percent did the ratio of price per share to earnings per share increase就等於{P(1+k%)/E(1+m%)-P/E}/P(1+k%)/E(1+m%)
化簡完就為
D. [100(k – m)] / (100 + m) %
你看看~若不等再問我唷! 我很熱心為你解答的!!
你好! 谢谢你给了我思路
我想通了
不过你的式子好像有点错误
{P(1+k%)/E(1+m%)-P/E}/P(1+k%)/E(1+m%)
红色部分应该是 P/E 才对
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