It costs $0.50 per square yard to waterproof canvas. What will it cost to waterproof a canvas truck cover that is 15'x24'?

Question

 Area cost per foot 

Answer 1

Take the area of 15' by 24'.

 

Area = 15' × 24'

       = 360 ft²

 

 

We have yards and feet.  This means that we must use unit conversion.

 

1 yd = 3 ft

 

 

Square both sides of conversion to obtain square yards.

 

1 yd² = 9 ft²

 

 

$0.50 = 9 ft²

 

Set a proportion using this factor and the area that was obtained to find the cost.

 

 

let x = cost

 

0.50 / 9 = x / 360

 

9x = 180

  x = 20

 

It will cost $20 to cover 360 square feet.