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Two pipes A and B can fill a tank in 24 hours and 8 hours respectively. If both are opened together, how long will they take to fill the tank?
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Two pipes A and B can fill a tank in 24 hours and 8 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 14 hours and 15 hours respectively. If both are opened together, how long will they take to fill the tank?
A pipe can fill a tank in 8 hours and another pipe can empty it in 15 hours. If both are opened together, in how much time will the tank be filled?
Pipes A and B can fill a tank in 10 and 19 minutes, and pipe C can empty it in 23 minutes. If all three are opened together, how long will it take to fill the tank?
Pipes A and B can fill a tank in 29 and 17 minutes, and pipe C can empty it in 31 minutes. If all three are opened together, how long will it take to fill the tank?