Question

The length of a rectangle is 3 times the width. The perimeter is

120 meters. Find the length and width.

Answer 1

is it from a text book

Explanation:

Answer 2

Let L = length, W = width and P =Perimeter

L = 3W

and

P + 2(L + W) = 120

L + W = 60

Substitute

3W + W = 60

4W=60

W=60/4

W=15

L+W=60

L+15=60

L=60-15

L=45