Re: [計量] 求救兩題GWD
※ 引述《oranger (從新出發)》之銘言：
: 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!
先解決3-18
設原始價格為Po, 原始EPS為Eo
則所求為 Po(1+k) Po
-------- -- ---
Eo(1+m) Eo Po(k-m) Eo
---------------- X100% = ----------X ----X 100%
Po Eo(1+m) Po
----
Eo
(k-m) 100(k-m)
= -----X 100% = -------- #
(1+m) (1+m)%
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 118.168.235.177
→
08/14 23:44, , 1F
08/14 23:44, 1F
討論串 (同標題文章)
GMAT 近期熱門文章
PTT職涯區 即時熱門文章