Question

A building has 3 identical rectangular parking lots. The sum of the perimeters of the 3 parking lots is 540 feet. If the width of each parking lot is 40 feet, how many feet long is each parking lot? Show Work!

Answer 1

180 feet (total perimeter of each) W=40 L = 50

(40+40) + (50+50) =180 3*180 = 540

Explanation:

2 sides of each parking is 80 (40+40)

80=2 sides of each parking

80*3=240 (we need to solve for the sum of the other 2 sides)

X= the sum of the other two sides

240+x=540

x=300 (this is the sum of the 2 other sides of the 3 parking

300/3 = 100 (the sum of 2 sides on each parking is 100 So 1 side is 50 )

100+ 80= 180 ( total perimeter of each parking lot is 180)

180*3 = 540

Answer 2

140 feet long is the correct answer. 140 + 40 = 180. 180 x 3 = 540 :)