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# Last year the price per share of Stock X increased by k

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Director
Joined: 17 Oct 2005
Posts: 938
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Last year the price per share of Stock X increased by k [#permalink]  18 Mar 2006, 20:45
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) %
SVP
Joined: 05 Apr 2005
Posts: 1731
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Re: percent increase [#permalink]  18 Mar 2006, 20:58
p/e ratio before = p/e
p/e ratio after = [p (100+k)]/[e(100+x)]
increament = [{p (100+k)}/{e(100+x)} -p/e] 100
should come [100(k-m)]/(100+m)%.
SVP
Joined: 05 Apr 2005
Posts: 1731
Followers: 5

Kudos [?]: 39 [0], given: 0

Re: percent increase [#permalink]  18 Mar 2006, 21:00
HIMALAYA wrote:
p/e ratio before = p/e
p/e ratio after = [p (100+k)]/[e(100+x)]
increament = [{p (100+k)}/{e(100+x)} -p/e] 100
should come [100(k-m)]/(100+m)%.

oh, i did it: http://www.gmatclub.com/phpbb/viewtopic ... t=earnings
Director
Joined: 17 Oct 2005
Posts: 938
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Kudos [?]: 70 [0], given: 0

thanks himalya, nice to see you here again
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