Macy put 200 inches of ribbon along the border of a rectangular bulletin board. If the length of the bulletin board is 4 times the width, then what are the dimensions?

Answer 1

let l = legth and w = width. Then, l = 4w.

2l + 2w = 200

l + w = 100

4w + w = 100

5w = 100

w = 20

l = 80