Question

A rectangular poster is 3times as long as it is wide. The perimeter is 24 inches. What are the lengths and widths?

Answer 1

Length: 9 inches per side

Width: 3 inches per side

Explanation:

Perimeter = 2*width + 2*length

Perimeter = (2 x W) + (2 x 3W) = 8W.

Since we know P = 24, it is also = 8W

With 24=8W, divide each side by 8, and W = 3.

So if W=3, the width is 3 inches, and the length is 3W, or 3x3 which is 9.