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2 March, 16:05

Rectangle poster is 3 times as long as wide perimeter is 24 in

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  1. 2 March, 16:27
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    w = width

    l = 3w

    P = 2 (l+w)

    substitute

    24 = 2 (3w+w)

    24 = 2 (4w)

    24 = 8w

    3 = w

    The width is 3 inches

    the length is 9 inches
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