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The Answer is 75 in.
The smaller picture has a perimeter of 30 and the ratio is 5:2, which means when the smaller one is two then the larger one is five. A simple question will be what is the value of the bigger one when the smaller one is 30
if 2=> 5
what will 30 be equal to?
=30/2 multiplied by 5
=15 x 5
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