SOLUTION: An inlet pipe can fill an empty swimming pool in 7 hours, and another inlet pipe can fill the pool in 2 hours. How long will it take both pipes to fill the pool?
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-> SOLUTION: An inlet pipe can fill an empty swimming pool in 7 hours, and another inlet pipe can fill the pool in 2 hours. How long will it take both pipes to fill the pool?
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Question 1153331: An inlet pipe can fill an empty swimming pool in 7 hours, and another inlet pipe can fill the pool in 2 hours. How long will it take both pipes to fill the pool? Answer by ikleyn(52780) (Show Source):
One inlet pipe fills of the tank volume per hour.
Other inlet pipe fills of the tank volume per hour.
Working together, they fill + of the tank volume per hour.
+ = = .
Hence, the tank will be filled in hours = hours = 1 hour and minutes = 1 hour 33 minutes and 20 seconds. ANSWER
