Pipe A runs 60 liters of water per minute into a pool that has a total volume of 3,600 liters. Pipe B fills a third of the pool in 12 hours.
Working together how long will it take both pipes to fill the pool?	Choose the correct choice from the following answers.
A) 2 hours and 36 minutes  B) 36/37 hours  C) 9 hours and 12 minutes  D) 15 hours  E) 1 hour and 48 minutes.
Pipe A has a rate of 60 liters per minute which equals a rate of 3600 liters per hour.   Pipe B has a rate of 100 liters per hour.   100 + 3600 (A+B) = Together they have a rate of 3700 liters per hour.   3600 (The pool) / 3700 = 36/37 hours   Answer -36/37 hours
<result>B</result>
Pipe A runs 60 liters of water per minute into a pool that has a total volume of 3,600 liters. Pipe B fills a third of the pool in 12 hours.
Working together how long will it take both pipes to fill the pool?