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If Carmen had 12 more tapes, she would have twice as many

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VP
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If Carmen had 12 more tapes, she would have twice as many [#permalink] New post 18 May 2008, 15:43
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A
B
C
D
E

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0% (00:00) correct 0% (00:00) wrong based on 0 sessions
19. If Carmen had 12 more tapes, she would have twice as many tapes as Rafael. Does Carmen have fewer tapes than Rafael?
(1) Rafael has more than 5 tapes.
(2) Carmen has fewer than 12 tapes

Can someone explain why A is insufficient?
Senior Manager
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Re: DS-Tapes [#permalink] New post 18 May 2008, 15:53
Lets say C is the no. tapes Carmen has, and R is the no. tapes Rafael has

C + 12 = 2R
From A :R>5

For R = 6 till 11 -> R > C,
for R = 12 -> R=C
For R > 12 ->C > R

So A is not sufficient
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Re: DS-Tapes [#permalink] New post 18 May 2008, 15:55
goalsnr wrote:
19. If Carmen had 12 more tapes, she would have twice as many tapes as Rafael. Does Carmen have fewer tapes than Rafael?
(1) Rafael has more than 5 tapes.
(2) Carmen has fewer than 12 tapes

Can someone explain why A is insufficient?


B

statement 1 is insuff because Carmen can have 18 tapes and Rafael has 15 tapes
or carment could have 6 tapes and Rafael has 9 tapes.
VP
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Re: DS-Tapes [#permalink] New post 18 May 2008, 16:19
gmatnub wrote:
goalsnr wrote:
19. If Carmen had 12 more tapes, she would have twice as many tapes as Rafael. Does Carmen have fewer tapes than Rafael?
(1) Rafael has more than 5 tapes.
(2) Carmen has fewer than 12 tapes

Can someone explain why A is insufficient?


B

statement 1 is insuff because Carmen can have 18 tapes and Rafael has 15 tapes
or carment could have 6 tapes and Rafael has 9 tapes.


Ok I get it. I made a table and now I see why A is suff

r c
6 0
11 10
12 12
13 14

Once again..Thanks buddy!
Re: DS-Tapes   [#permalink] 18 May 2008, 16:19
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