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?

First we set up our equations:

Width = w

Length = 2w+8

Perimeter = 2w+2 (Length) = 2w+2 (2w+8) = 2w+4w+16 = 6w+16

We know the perimeter is 124, so our equation is 124=6w+16

108=6w

18=w

So we know the width is 18 feet.

The length is (8*2) + 8 = 24 feet.