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the perimeter of some traffic sign must be 150 inches also its length is 15 inches longer than its width, find the dimensions of this sign

  • math -

    You don't say what shape your traffic sign is.
    e.g.
    a stop sign is a regular octogaon, yours can't be that
    a yield sign is an equilateral triangle, not yours
    etc.

  • math -

    however, since you mention only length and width, let's assume a rectangle.

    2(w+(w+15)) = 150
    4w + 30 = 150
    w = 30

    the sign is 30x45

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