A tube can fill a tank in 15 hours. Due to a leak in the bottom, it is filled in 20 hours. If the tank is full, how much time will the leak alone take to empty it?

A tube can fill a tank in 15 hours. Due to a leak in the bottom, it is

1.	A tube can fill a tank in 15 hours. Due to a leak in the bottom, it is filled in 20 hours. If the tank is full, how much time will the leak alone take to empty it?
A.	20 hours
B.	60 hours
C.	32 hours
D.	40 hours
Answer» C. 32 hours

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A tube can fill a tank in 15 hours. Due to a leak in the bottom, it is filled in 20 hours. If the tank is full, how much time will the leak alone take to empty it?

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