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andrehaui
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At the close of trading on Tuesday, the price per share of a 27 Jun 2007, 07:39
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At the close of trading on Tuesday, the price per share of a acertain stock was 20 percent less than the price per share at the close of trading on Monday. On Wednesday, the price per share at closing was 25 percent less than that on Tuesday. If on Thursday, the price per share at closing was equal to the closing price Monday, what was the proxy percent increase in the price per share of the stock from closing Wednesday to closing Thursday?

(A) 45%
(B) 67%
(C) 75%
(D) 145%
(E) 167%



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AugiTh
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At the close of trading on Tuesday, the price per share of a 27 Jun 2007, 08:01
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I go in for B (67%)
Explanation
Let Mon=x
Tue = 1-0.2x=0.8x
Wed=0.8x-(25%of 0.8x) = 0.8x-0.2x=0.6x
Thu=Mon=x

(Thu-Wed)/Wed=(x-0.6x)/0.6x = approximately 67%
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ian7777
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At the close of trading on Tuesday, the price per share of a 27 Jun 2007, 08:02
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andrehaui
At the close of trading on Tuesday, the price per share of a acertain stock was 20 percent less than the price per share at the close of trading on Monday. On Wednesday, the price per share at closing was 25 percent less than that on Tuesday. If on Thursday, the price per share at closing was equal to the closing price Monday, what was the proxy percent increase in the price per share of the stock from closing Wednesday to closing Thursday?

(A) 45%
(B) 67%
(C) 75%
(D) 145%
(E) 167%
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B. Start with 100 on Monday, and follow the logic. Works out to 2/3.
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misterJJ2u
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At the close of trading on Tuesday, the price per share of a 27 Jun 2007, 09:27
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add another B for me:

(assume)
Monday = 100

Then:
Tuesday = 80 (20% decrease from Monday)
Wednesday = 60 (25% decrease from Tuesday)
Thursday = 100 (same value as Monday)

% = difference over original amount (Wednesday's number)
% = (100-60)/60 = 40/60 = 2/3 = 67%
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andrehaui
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At the close of trading on Tuesday, the price per share of a 27 Jun 2007, 12:45
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yes OA is 67% :-D :-D :-D
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ArvGMAT
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At the close of trading on Tuesday, the price per share of a 27 Jun 2007, 21:57
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67%

M x
T .8x
W .75(.8x) = .6x
T x

x-.6x=.4x
.4x/.6x = 2/3 =.67
67%



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This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
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