Question

A rectangle has a length that is five times longer than its width. If the perimeter of the rectangle is 12 inches, what is the width?

Answer 1

P = 2(l + w)            formula for perimeter

12 = 2(5w + w)       sub in what we know to create an equation

12 = 2(6w)              solve for w
12 = 12w
12/12 = w
1 = w

The width is 1 inch.