Question: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 `7 : 5`
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+ Answer
C
+ ExplanationFor dividing `12` into two whole numbers, the sum of the terms of the ratio must be a factor
of `12`.
So, they cannot be in the ratio `3 : 2`.