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A pipe fills a tank in 11 hours. Because of a leak at the bottom it takes 12 hours. If the tank is full, in how much time will the leak empty it?
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A pipe fills a tank in 11 hours. Because of a leak at the bottom it takes 12 hours. If the tank is full, in how much time will the leak empty it?
A pipe fills a tank in 9 hours. Because of a leak at the bottom it takes 12 hours. If the tank is full, in how much time will the leak empty it?
Pipes A and B can fill a tank in 29 and 30 minutes, and pipe C can empty it in 28 minutes. If all three are opened together, how long will it take to fill the tank?
Two pipes A and B can fill a tank in 21 hours and 18 hours respectively. If both are opened together, how long will they take to fill the tank?
Two pipes A and B can fill a tank in 29 hours and 16 hours respectively. If both are opened together, how long will they take to fill the tank?