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# Joe bought only \$0.20 stamps and \$0.30 stamps. How many

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Manager
Joined: 04 Apr 2010
Posts: 88

Kudos [?]: 66 [0], given: 17

Schools: UCLA Anderson
Joe bought only \$0.20 stamps and \$0.30 stamps. How many [#permalink]

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15 Jun 2010, 17:29
00:00

Difficulty:

(N/A)

Question Stats:

100% (00:35) correct 0% (00:00) wrong based on 25 sessions

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Joe bought only \$0.20 stamps and \$0.30 stamps. How many \$0.20 stamps did he buy?

(1) Joe bought an equal number of \$0.20 stamps and \$0.30 stamps.
(2) Joe bought a total of \$2.50 worth of stamps.
_________________

Kudos [?]: 66 [0], given: 17

Senior Manager
Joined: 19 Nov 2009
Posts: 311

Kudos [?]: 99 [0], given: 44

Re: twenty cent and thirty cent stamps... [#permalink]

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15 Jun 2010, 18:24
C.

Let x be the no. of \$0.20 stamps and y be the number of \$0.30 stamps

St. 1 : Insufficient - Total no. of stamps is unknown
St. 2 : Insufficient - 0.2x + 0.3y = 2.50. The possible values of (x,y) include (5,5), (8,3), (11,1)

St. 1 & 2 : Sufficient - x = y and 0.2x + 0.3y = 2.50. hence, x=y=5.
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Kudos [?]: 99 [0], given: 44

Intern
Joined: 03 Apr 2016
Posts: 16

Kudos [?]: 8 [0], given: 1219

Re: Joe bought only \$0.20 stamps and \$0.30 stamps. How many [#permalink]

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28 May 2016, 08:35

Kudos [?]: 8 [0], given: 1219

Re: Joe bought only \$0.20 stamps and \$0.30 stamps. How many   [#permalink] 28 May 2016, 08:35
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