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11 March, 09:19

The perimeter of a rectangle is 400 meters. The length is 15 meters less than 4 times the width. Find the length and width. (show work)

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  1. 11 March, 12:58
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    L=4*w-15

    P=2w+2l=2w+2 * (4w-15) = 2w+8w-2*15=400

    10w-30=400

    10w=400+30=430

    w=430:10

    w=43 m

    l=4*43-15=172-15

    l=157 m
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