Last year the price per share of Stock X increased by k percent and the earings 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 earings 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)%
ㄜ~好久沒碰數學了...都退步了...誰幫幫我這題...謝謝 (FF)