问几道ＧＷＤ（以前没人问过）

ybalawan

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+k+m) %

Of the goose eggs laid at a certain pond, 2/3 hatched, and 3/4 of the geese that hatched from those eggs survived the first month.  Of the geese that survived the first month, 3/5 did not survive the first year.  If 120 geese survived the first year and if no more than one goose hatched from each egg, how many goose eggs were laid at the pond?

 

A.     280

B.     400

C.     540

D.     600

E.      840

最后一题是附件中题．

请大家指导！

 

多谢了！

 

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