Question

A swimming pool is being filled at a rate of 12 cubic feet per minute. If the pool is 18 yards long, 10 yards wide, and 3 yards deep, how many minutes will it take to fill the pool?

Answer 1

Assuming that the pool has a flat bottom, the volume of water is 
V=length*width*height 
=28*12*8 cubic feet

Answer 2

12 cubic yards/minute = volume/time 

Find the volume by multiplying width, height and length 
Volume = 18*10*3 = 540 cubic yards 

Back to original equation: 
12 = 540/time 
time = 540/12 

time = 45 minutes