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22) If a carton containing a dozen mirrors is dropped, which

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CEO
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22) If a carton containing a dozen mirrors is dropped, which [#permalink] New post 09 Nov 2008, 13:12
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A
B
C
D
E

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22) If a carton containing a dozen mirrors is dropped, which of the following cannot be the ratio of broken mirrors to unbroken mirrors?

(a) 2:1
(b) 3:1
(c) 3:2
(d) 1:1
(e) 7:5
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Re: PS [#permalink] New post 09 Nov 2008, 14:34
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Should be C.
Sum of the x:y relationships should add up to 12 or to the factor of 12:
(a) 2:1 --meaning 8b:4ub
(b) 3:1 --9b:3ub
(c) 3:2 --doesn't work
(d) 1:1 -- 6b:6ub
(e) 7:5 -- 7b:5ub

Last edited by seofah on 09 Nov 2008, 15:40, edited 1 time in total.
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Re: PS [#permalink] New post 09 Nov 2008, 15:34
GMAT TIGER wrote:
22) If a carton containing a dozen mirrors is dropped, which of the following cannot be the ratio of broken mirrors to unbroken mirrors?

(a) 2:1
(b) 3:1
(c) 3:2
(d) 1:1
(e) 7:5


12/3 = 4 ..OK

12/4 = 3....OK

12/5.......NOT OK........c
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Re: PS [#permalink] New post 09 Nov 2008, 16:07
I went with C as well..

I realized that 3:2 =5 and 5 is not a factor or multiple of 12..so it cant be C
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Re: PS [#permalink] New post 09 Nov 2008, 20:18
GMAT TIGER wrote:
22) If a carton containing a dozen mirrors is dropped, which of the following cannot be the ratio of broken mirrors to unbroken mirrors?

(a) 2:1
(b) 3:1
(c) 3:2
(d) 1:1
(e) 7:5


OA is C.

Thanks everybody..
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Re: PS   [#permalink] 09 Nov 2008, 20:18
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22) If a carton containing a dozen mirrors is dropped, which

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