The ratio between the perimeter and the width of a rectangle is 5 : 1.

The ratio between the perimeter and the width of a rectangle is 5 : 1. If the area of the rectangle is 150 sq. cm, what is the length of the rectangle?

Quiz

Answer/Solution

15 cm

Steps/Work

2L+2W = 5W
L = 3W/2
W*L = 150
3W^2/2 = 150
W^2 = 100
W = 10
L = 3(10)/2 = 15
The answer is B.