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3 September, 15:05

A 4x5 inch photo is enlarged by multiplying every dimension by 2 to form a similar 8x10 inch photo. What is the ratio of the perimeter of the smaller rectangle to that of the larger?

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  1. 3 September, 15:42
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    The first photo has a perimeter of 18

    The second photo has a perimeter of 36

    So, the ratio is 18:36 which simplifies to 1:2
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