Question

The formula for the perimeter of rectangle is P=2L+2w, where L is the lenght and W is the width. A rectangle has a perimeter of 24 inches. Find its dimensions if its lenght is 3 inches greater than its width

Answer 1

P=2L+2W
L=3+w
24=2x(3+w)+2w
24=6+2w+2w
24=6+4w
24-6=4w
18=4w
4 and 1/2 = 2