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23 June, 14:37

The perimeter of a rectangle sandpit is 40 meters. The length of the sandpit is 1 meter less than twice it's width. What are the dimensions of this sandpit

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  1. 23 June, 15:22
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    L = 15, W = 8

    Step-by-step explanation:

    Perimeter = 2 (L + W)

    P = 40

    L = 2W - 1

    40 = 2 ((2W-1) + W)

    40 = 4W - 2 + 2W

    40 = 6W - 2

    42 = 6W

    W = 8

    Since L = 2W - 1

    L = 2 (8) - 1

    L = 15
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