3 years ago

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

1 answer:

3 0

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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