Pipes A and B can fill a tank in 36 hours and 48 hours, respectively. Both pipes are opened together for 9 hours and then A is closed. Pipe B alone will fill the remaining part of the tank now in :

Pipes A and B can fill a tank in 36 hours and 48 hours, respectively.

1.	Pipes A and B can fill a tank in 36 hours and 48 hours, respectively. Both pipes are opened together for 9 hours and then A is closed. Pipe B alone will fill the remaining part of the tank now in :
A.	27 hours
B.	25 hours
C.	\(20\frac{1}{2}\) hours
D.	24 hours
Answer» B. 25 hours

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Pipes A and B can fill a tank in 36 hours and 48 hours, respectively. Both pipes are opened together for 9 hours and then A is closed. Pipe B alone will fill the remaining part of the tank now in :

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