If a box containing 16 glass frames are dropped, which of the following cannot be the ratio of broken glass frames to unbroken glass frames?
7 : 2
1 : 1
3 : 5
1 : 7
Solution: For dividing 16 into two whole numbers, the sum of the ratio terms must be a factor of 16.
So, they cannot be in the ratio 7 : 2.
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