Gate A runs 3000 liters of water per minute out of a check dam that has a total volume of 360000 liters. Gate B drains a third of the dam in 6 hours.
Working together how long will it take both gates to drain the dam completely ? Choose the correct option.
A) 2 hours and 36 minutes
B) 1.5 hours
C) 9 hours and 12 minutes
D) 15 hours
E) 1 hour and 28 minutes.
Gate A has a rate of 300 liters per minute which equals a rate of 18,000 liters per hour.   Pipe B has a rate of 10,000 liters per hour.   10,000 + 18000 (A+B) = Together they have a rate of 28000 liters per hour.   36000 (The dam ) / 28000 = 36/28 = 1 Hour and 28 minutes   Answer -1 hour and 28 minutes.
<result>E</result>
Gate A runs 3000 liters of water per minute out of a check dam that has a total volume of 360000 liters. Gate B drains a third of the dam in 6 hours.
Working together how long will it take both gates to drain the dam completely ?