GWD3-18
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 ?
Ans: [100(k-m)]/(100+m)%
GWD5-28
Last Sunday a certain store sold copies of Newspaper A for 1.00 each and
copies of Newspaper B for 1.25 each, and the store sold no other newspapers
that day. If r percent of the store's revenues from newspaper sales was from
Newapaper A and if p percent of the newspapers that the store sold were copies
of Newspaper A, which of the following expresses r in terms of p ?
Ans: 400p/(500-p)
請幫忙解答一下,謝謝!!
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 218.172.198.131