Q. Two pipes can fill a tank in 16 hours and 24 hours respectively. A third pipe empties it in 48 hours. How long will it take to fill the tank?
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Correct Answer: (B)
16 hours
Explanation: Net rate = 1/16 + 1/24 − 1/48 = 1/16.
Explanation by: Hriday
Net rate = 1/16 + 1/24 − 1/48 = 1/16.