Question

The length of s rectangle is 5 inch longer than the width. The perimeter of the rectangle is 40 inches. What is the width, in inches?

Answer 1

L=W+5

P=2*(L+W)=40

L+W=40:2

L+W=20

W+5+W=20

2W+5=20

2W=15

W=15:2

W=7,5