The janitor at a school discovered a leak in a pipe. The janitor found that it was leaking at a rate of 7 fl oz per minute. How fast was the pipe leaking in gallons per hour?
1 gallon = 128 fluid ounces
1 hour = 60 minutes.
7 fluid ounces x 60 minutes =420 fluid ounces per hour.
420 / 128 fluid ounces in 1 gallon
=3.28125 gallons per hour.
+12 
