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# If a carton containing a dozen mirrors is dropped, which of

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If a carton containing a dozen mirrors is dropped, which of [#permalink]

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19 Mar 2005, 10:03
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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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19 Mar 2005, 11:31
anirban16 wrote:
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

(C) 3:2

This yields the only sum 3 + 2 = 5 that is not a factor of 12.
Rest 3, 4, 2, 12 are all factors of 12.

Hope that helps.
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19 Mar 2005, 11:38
"C"

x/12-x....for 3:2, this will not satisfy.
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