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2 October, 20:07

A rectangular photo has a length of 3 inches and a width of 5 inches. A rectangular poster is 15 feet wide. If the photo and poster are similar rectangles, find the length of the poster.

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  1. 2 October, 21:15
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    3 is to 15 and 5 is to x

    they are the same ratio so

    3:15=5:x

    3/15=5/x

    1/5=5/x

    5/25=5/x

    x=25

    the leghtn of the poster is 25 feet
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