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Throughout last year, a stylish jacket had a full price of P

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Magoosh GMAT Instructor
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Throughout last year, a stylish jacket had a full price of P [#permalink] New post 20 Mar 2013, 10:50
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70% (02:38) correct 30% (01:52) wrong based on 63 sessions
11) Throughout last year, a stylish jacket had a full price of P in certain store. At the beginning of this year, the regular full price of the jacket rose A% percent. Shortly after the beginning of this year, this store had a sale, and Margarette bought the jacket at B% less than then this year’s current full price, where B > A. How much did Margarette save, buying the jacket this year on sale, as compared to what she would have spent last year?

Statement #1: P = $250

Statement #2: B – A = 5


For a full explanation, see #11 in the second half of this post:
http://magoosh.com/gmat/2013/gmat-sampl ... questions/

Let me know if there are any questions.
Mike :-)
[Reveal] Spoiler: OA

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Re: Throughout last year, a stylish jacket had a full price of P [#permalink] New post 20 Mar 2013, 12:24
E

new price:
\(P\frac{(100+A)}{100}\frac{(100-B)}{100}\)

savings:
\(P - P\frac{(100+A)}{100}\frac{(100-B)}{100} = ?\)

P = $250
B – A = 5

case 1:

B=90 A=85
250(185%)10%= price1

case 2

B=10 A=5
250(105%) 90% = price2

clearly
(P-price1) does not equal (P-price2)
So we cannot determine how much she saved.
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Re: Throughout last year, a stylish jacket had a full price of P   [#permalink] 20 Mar 2013, 12:24
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