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一题不会解,一题觉得答案有问题

Q18: 
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) %
Answer:  D

我对题意的理解是:每股价格上涨了K%,每股收益上涨了M%,求每股价格比每股收益?

我觉得通过题目条件无法求解,对答案D也看不明白,请大家指点一二。

Q35: 
In June 1989, what was the ratio of the number of sales transactions made by Salesperson
X to the number of sales transactions made by Salesperson Y?
(1)  In June 1989, Salesperson X made 50 percent more sales transactions than
Salesperson Y did in May 1989.
(2)  In June 1989, Salesperson Y made 25 percent more sales transactions than in
May 1989.
  
A. Statement  (1) ALONE is sufficient, but statement (2) alone is not sufficient. 
B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient. 
C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is
sufficient.
D. EACH statement ALONE is sufficient.
E. Statements (1) and (2) TOGETHER are NOT sufficient.
Answer:  C

我认为答案为A。条件1就可以得出X:Y=3:2了呀。大家认为呢?

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第二题你看错了,Y销售的是五月份,呵呵,两个不是一个月,没有可比性。

第一题比较难,估计是实验题,我注意到 where k is greater than m,我想这意味着

在涨价以前,股票的成本可能是亏损的,否则怎么会长到一个价格后,收益和股价增幅

不一致呢,只有一个可能,就是收益没有涨幅大,则股票开始是被套的。

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第二题真是看错了,中招了。有人能解释一下第一题吗?

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 呵呵,想了半天,我觉得我们是最后一个问题搞错了,By what percent did the
ratio of price per share to earnings per share increase, in terms of k and m?
 
这句话太绕了,他的意思是:每股股价和收益的比率增加了多少百分比?

这样假设初期股价是S,则涨价后的股价是S1=(100+k)S/100,同理,初期的收益是E,则涨价后的收益E1是(100+m)E/100,对吧。

那么他的意思是S1/E1比S/E增加了多少比例,你算算,就是D,呵呵。


所以关键是最后一句问题的理解。

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太感谢了!果然是理解错误,看样子阅读不过关呀

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