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22 July, 08:40

the length of a rectangle is 5 less than 3 times the width. the perimeter is 150 centimeters. what is the length and width?

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  1. 22 July, 12:36
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    The lenght: x

    The width: y

    x = 3y-5 (cm)

    x + y = 150/2 = 75 (cm)

    => 3y-5+y = 75

    => 4y = 80

    => y = 20 (cm)

    => x = 3*20-5 = 55 (cm)
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