Question

9. The width of a rectangle is six inches less than its length. If the perimeter of this rectangle is 20 inches, find

the width.

1) 6 inches
2) 2 inches
3) 8 inches
4) 4 inches

Answer 1

If we say the width is x, the length is gonna be x+6.

So the equation of perimeter is gonna be

2(x) + 2 (x+6) = 20

This is gonna be

2x + 2x +12 = 20

4x + 12 = 20

4x = 8

x = 2

The width is 2 inches.

So the answer is 2.