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19 October, 06:52

Chris swam once along the length of a pool that has a perimeter of 124 yd. The width of the pool is 20 yd. How many yd did he swam

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  1. 19 October, 08:06
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    Perimeter = 2L x 2W (l = length, W = width)

    perimeter = 124, width = 20:

    124 = 2L + 2 (20)

    124 = 2L + 40

    124-40 = 2L

    84 = 2L

    L = 84/2

    L = 42

    he swam 42 yards
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