[求助]一个有关price per share to earning per share问题

akatsuki09

The question is :

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+m+k)%

Could anyone be so kind to tell me how to figure this question out?

I'm confused on this matter.

Thanks a lot.

yunnan1990

选D吧

设原来的股价是Y，EPS是X

[Y(1+k%)/X(1+m%)-Y/X]/(Y/X)=(k-m)/(100+m)=[100(k-m)]/(100+m)%

akatsuki09

Oh, I see.

Thank you very much.