A rectangular room is three times as long as it is wide, and its perimeter is 80 meters. find the length of the room

Let the width of the room be = x

Length of the room = 3x, Since it is three times as wide

Perimeter = 80m

Perimeter = 2 * (L + W) = 2 * (3x + x) = 80

2 * (3x + x) = 80

2 * (4x) = 80

8x = 80 Divide both sides by 8

x = 80/8

x = 10, But length = 3x, = 3*10 = 30

Length = 30m