Pipe A can fill a water tank in 45 minutes and pipe B can empty it in 30 minutes. If both the pipes are opened when the tank is empty, the tank will be filled in

The tank can never be filled in

Pipe A can fill a water tank in 45 minutes and pipe B can empty it in

1.	Pipe A can fill a water tank in 45 minutes and pipe B can empty it in 30 minutes. If both the pipes are opened when the tank is empty, the tank will be filled in
A.	18 minutes
B.	90 minutes
C.	The tank can never be filled in
D.	None of the above
Answer» D. None of the above

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Pipe A can fill a water tank in 45 minutes and pipe B can empty it in 30 minutes. If both the pipes are opened when the tank is empty, the tank will be filled in

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