Rugs sell for $8 per square foot. Beth bought a 9 foot long rectangular rug for $432. How wide was the rug?

Question

need to know how to work this problem

 

Answer 1

Because rugs sell for $8 per square foot and the rug cost $432., then the area of the rug would be A where:

A = 432/8 = 54 sq ft

 

The area of a rectangle A is shown below:

A = (L)(W)

where L is the length and W is the width.

 

Since we know A = 54 sq ft and L is 9 feet, we can solve this for W.

 

54 = (9)(W)

 

Dividing both sides of the equation by 9 to get W

 

54/9 = (9/9)(W)

 

W = 6 feet