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Last year the price per share of stock X increased by k%,

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Last year the price per share of stock X increased by k%, [#permalink] New post 11 Dec 2005, 06:35
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Last year the price per share of stock X increased by k%, and the earnings per share of X increased by m%(k>m), by what percent did the ratio of the price per share to earnings per share increase?(in term of k and m)?

OPEN DISCUSSION OF THIS QUESTION IS HERE: last-year-the-price-per-share-of-stock-x-increased-by-k-89307.html
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Re: PS - Stock [#permalink] New post 11 Dec 2005, 08:53
before,
price =mps = p
earning=eps=e
mps/eps ratio, before = p/e

after,
rate of increase, mps=k
rate of increase, eps=m
price =mps = p (1+k)
earning=eps=e (1+m)
mps/eps ratio, after = p(1+k)/e(1+m)
increase in the ration, = [p(1+k)/e(1+m) - (p/e)]/ (p/e) = (k-m)/(1+m)

will revise, if any error.
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 [#permalink] New post 12 Dec 2005, 10:26
Here are the answer choices

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)%
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Re: PS - Stock [#permalink] New post 12 Dec 2005, 18:33
HIMALAYA wrote:
before,
price =mps = p
earning=eps=e
mps/eps ratio, before = p/e

after,
rate of increase, mps=k
rate of increase, eps=m
price =mps = p (1+k)
earning=eps=e (1+m)
mps/eps ratio, after = p(1+k)/e(1+m)
increase in the ration, = [p(1+k)/e(1+m) - (p/e)]/ (p/e) = (k-m)/(1+m)

will revise, if any error.

its D.

before,
price =mps = p
earning=eps=e
mps/eps ratio, before = p/e

after,
rate of increase, mps=k
rate of increase, eps=m
price =mps = p (100+k)%
earning=eps=e (100+m)%
mps/eps ratio, after = p(100+k)/e(100+m)%
increase in the ration, = [{p(100+k)/e(100+m) - (p/e)}/ (p/e)]100 %
= 100(k-m)/(100+m)%
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 [#permalink] New post 14 Dec 2005, 23:11
D

Original Price: x
Original EPS = y

Ratio = x/y

Now Price = (x/100) * (1+(k/100))
Now EPS = (y/100) * (1+(m/100))

Ratio = (x/y) * [(1+(k/100)) / (1+(m/100))] = (x/y) * (100+k)/(100+m)

% Increase in ratio = [(100+k)/(100+m)] - 1 = (k-m)/(100+m)
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Re: [#permalink] New post 28 Jan 2013, 09:05
ps_dahiya wrote:
D

Original Price: x
Original EPS = y

Ratio = x/y

Now Price = (x/100) * (1+(k/100))
Now EPS = (y/100) * (1+(m/100))

Ratio = (x/y) * [(1+(k/100)) / (1+(m/100))] = (x/y) * (100+k)/(100+m)

% Increase in ratio = [(100+k)/(100+m)] - 1 = (k-m)/(100+m)


I dont seem to understand how you simplified (x/y) * [(1+(k/100)) / (1+(m/100))] to become (x/y) * (100+k)/(100+m)

Sorry, i know this is very basic but if one of you could just explain it to me, i would highly appreciate it.
thanks!
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Re: Re: [#permalink] New post 28 Jan 2013, 09:12
iwillbeatthegmat wrote:
ps_dahiya wrote:
D

Original Price: x
Original EPS = y

Ratio = x/y

Now Price = (x/100) * (1+(k/100))
Now EPS = (y/100) * (1+(m/100))

Ratio = (x/y) * [(1+(k/100)) / (1+(m/100))] = (x/y) * (100+k)/(100+m)

% Increase in ratio = [(100+k)/(100+m)] - 1 = (k-m)/(100+m)


I dont seem to understand how you simplified (x/y) * [(1+(k/100)) / (1+(m/100))] to become (x/y) * (100+k)/(100+m)

Sorry, i know this is very basic but if one of you could just explain it to me, i would highly appreciate it.
thanks!


\frac{x}{y}*\frac{1+\frac{k}{100}}{1+\frac{m}{100}}=\frac{x}{y}*\frac{\frac{100+k}{100}}{\frac{100+m}{100}}=\frac{x}{y}*\frac{100+k}{100}*\frac{100}{100+m}=\frac{x}{y}*\frac{100+k}{100+m}.

Hope it's clear.

OPEN DISCUSSION OF THIS QUESTION IS HERE: last-year-the-price-per-share-of-stock-x-increased-by-k-89307.html
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Re: Re:   [#permalink] 28 Jan 2013, 09:12
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