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5 March, 04:18

The perimeter of a rectangular floor is 80 feet. Find the dimensions of the floor if the length is three times the width

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  1. 5 March, 04:30
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    A) 2L + 2W = 80

    B) L = 3W or L - 3W = 0

    Multiplying Equation B) by - 2

    B) - 2L + 6W = 0 then adding equation A

    A) 2L + 2W = 80

    8W = 80

    Width = 10

    Length = 30
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