The length of a room is 5 feet less than triple its width. The perimeter of the room is 54 feet. What is the length of the room?

Question

I need help on this question can you please help me.

Answer 1

Let w = the width

Let 3w - 5 = the length

P = 2l + 2w

54 = 2(3w-5) + 2w

54 = 6w - 10 + 2w

64 = 8w

8 feet = w

length = 3(8) - 5 = 24 - 5 = 19 feet