The length of a rectangle is 3 feet less than 4 times the width. If the perimeter is 144 feet, find the length and the width of the rectangle

Question

The length of a rectangle is 3 feet less than 4 times the width. If the perimeter is 144 feet, find the length and the width of the rectangle

Answer 1

L=4W-3

P=2(W+L) = 144

W+L=144/2 = 72

W+4W-3 = 72

5W = 72+3 = 75

W = 75/5 = 15 feet wide

L =4(15)-3 = 45-3 = 42 feet long

2(15+42) = 2(57)= 144