Pipe A can fill a tank in 36 minutes and Pipe B can empty the tank in 45 minutes. If both the pipes are opened simultaneously, then find the time (in hours) to fill the tank to half its capacity.

Pipe A can fill a tank in 36 minutes and Pipe B can empty the tank in

1.	Pipe A can fill a tank in 36 minutes and Pipe B can empty the tank in 45 minutes. If both the pipes are opened simultaneously, then find the time (in hours) to fill the tank to half its capacity.
A.	1.25
B.	1.5
C.	1.75
D.	2
Answer» C. 1.75

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Pipe A can fill a tank in 36 minutes and Pipe B can empty the tank in 45 minutes. If both the pipes are opened simultaneously, then find the time (in hours) to fill the tank to half its capacity.

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