Question

The perimeter of a rectangle is 20 inches. If its length is three times its width, find the dimensions.

Answer 1

l=7.5, w=2.5

Explanation:

ok length=3w

width=w

therefore, 2(3w+w)=20

6w+2w=20

8w=20

w=20/8

w=2.5

therefore, width=2.5, length=7.5