GWD-4 的问题。

ken_miu

 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.   %
B. (k – m) %
C. [100(k – m)] / (100 + k) %
D. [100(k – m)] / (100 + m) %
E. [100(k – m)] / (100 + k + m) %
Answer: D

 有人可以帮忙解释下这道题吗？

ilhht

根据题目的意思，Price increase per share = X (1 + k/100) = X(100+k)/100 = P
同样的道理 Earnings increase per share = X(100 +M)/100 = E

所以增长的比率 P/E = (P/E - 1)/1 % increase = new value - initial value/initial value
= X(100+k)/100 / X(100 +M)/100
= (100+k)/(100 +M)
to convert 100 + M to % = (100 +m)/100
= [100*(100+k)]/(100+m)% answer

答案就是D

ken_miu

。。。　谢了哈。。。　被题目问糊涂了。。