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25 March, 13:34

The width of a rectangle is 6 in. less than its length. The perimeter is 68 in.

What is the width of the rectangle?

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  1. 25 March, 16:24
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    Let L = length, W = width

    On the problem, W = L - 6

    The perimeter of a rectangle is 2*L + 2*W = P

    Given P = 68, so

    2*L + 2 * (L - 6) = 68

    2*L + 2*L - 12 = 68

    4L = 68 + 12

    4L = 80

    L = 20 inches

    W = 20 - 6 = 14 inches
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