Another quick math problem...?

Question

Carpeting costs $20 per square yard. You carpet a room that has a width of 15 feet for $800. What is the length of the room in feet?

I dunno how to solve it...

thanks<3

Answer 1

$800 divided by $20 per square yard = 40 square yards

15 feet = 5*3 feet = 5 yards

A=lw (area = length * width)

l = A/w = 40/5 = 8

The length is 8 yards or 24 feet.

Rohau&#039;s method/explanation also leads to 24 feet.

Answer 2

Just remember there are 9 sq. feet in a yard.

800 divided by 20 is 40 yards or divided by 9 is 360 sq feet.  

360 divided by 15 (width) =