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# At the post office Louis bought 50 stamps, each of which was

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Manager
Joined: 12 Oct 2008
Posts: 103
At the post office Louis bought 50 stamps, each of which was [#permalink]

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24 Oct 2008, 07:52
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 2 sessions

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At the post office Louis bought 50 stamps, each of which was either a 20-cent or 25-cent stamp. How many of the stamps were 25-cent stamps?
(1) He spent a total \$11.00 for the stamps
(2) He bought 1,5 times as many 20-cent stamps as 25-cent stamps

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Intern
Status: 4th attempt taking the GMAT
Joined: 20 Sep 2008
Posts: 15
Location: Chapel Hill
Schools: Fuqua

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24 Oct 2008, 08:11
I got D
x= 20cent stamps
y=25 cent stamps
x+y=50
From Stamt 1
.20x+.25y=11
2 equations sufficient
From Stamt 2
(I really didn't understand "he got 1")
5x=y
2 equations sufficient
whats the OA?
Intern
Joined: 21 Aug 2008
Posts: 23

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24 Oct 2008, 10:13
Quote:
At the post office Louis bought 50 stamps, each of which was either a 20-cent or 25-cent stamp. How many of the stamps were 25-cent stamps?
(1) He spent a total \$11.00 for the stamps
(2) He bought 1,5 times as many 20-cent stamps as 25-cent stamps

EDIT

D, either one is sufficient

--== Message from GMAT Club Team ==--

This is not a quality discussion. It has been retired.

If you would like to discuss this question please re-post it in the respective forum. Thank you!

To review the GMAT Club's Forums Posting Guidelines, please follow these links: Quantitative | Verbal Please note - we may remove posts that do not follow our posting guidelines. Thank you.
Re: DS stamps   [#permalink] 24 Oct 2008, 10:13
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