Question

The perimeter of a bedroom door is 24 feet. the door is 9 feet tall. how wide is it?

Answer 1

P = 2(L + W)
P = 24
L = 9

24 = 2(9 + W)
24 = 18 + 2W
24 - 18 = 2W
6 = 2W
6/2 = W
3 = W <=== so the width is 3 ft

Answer 2

The answer to that question is 3 feet wide.