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21 December, 04:25

The length of a rectangular building is 6ft less than 3 times the width. The perimeter is 120 ft. Find the width and the length of the building.

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  1. 21 December, 04:34
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    The L=3w-6

    P=2L+2W=120ft

    lets write the P=2 (3w-6) + 2w=120

    P=6w-12+2w=120

    8w=132

    w=132/8=16.5

    L = (3*16.5) - 6=43.5

    P=2 (16.5+43.50) = 120
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