Question

The perimeter of a rectangle is 40 inches. if its length is three times its width, find the dimensions.'

Answer 1

the perimeter of a rectangle = 2(L+B)

therefore, 40 = 2(L+B)
40/2 = L+B
20 = L+B

3L+B = 20
B= 20/4
= 5
L= 5*3
= 15

i hope this helps