Question

The length of a room is 8 feet more than twice width. If it takes 124 feet of molding to go around the perimeter of the room, what are its dimensions?

Answer 1

Let length be l and width be w
l = 2w + 8
124 = 2w + 2l
Subtract the first equation from the second to get
124 - l = 2l - 8
124 = 3l - 8
132 = 3l
l = 44
w = 18