Question

The perimeter of a rectangle is 42 cm. the length is 3 cm greater than the width. Find the width.

Answer 1

Set up an equation. 42= w+w+(3+w)+(3+w)
42= 4w+6
42-6= 4w+6-6
36=4w
36/4=4w/4
9 = w


So w=9; The width is 9 cm.