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

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

Answer 2

Answer:

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

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

Step-by-step 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