Two pipes A and B can fill a tank in 6 hrs and 4 Hrs respectively. If they are opened on alternate hrs and Pipe A is opened first, in how many hours shall the tank be full ..?

Two pipes A and B can fill a tank in 6 hrs and 4 Hrs respectively. If

1.	Two pipes A and B can fill a tank in 6 hrs and 4 Hrs respectively. If they are opened on alternate hrs and Pipe A is opened first, in how many hours shall the tank be full ..?
A.	4 Hrs
B.	4 1/2 Hrs
C.	5 Hrs
D.	5 1/2 Hrs
Answer» D. 5 1/2 Hrs

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Two pipes A and B can fill a tank in 6 hrs and 4 Hrs respectively. If they are opened on alternate hrs and Pipe A is opened first, in how many hours shall the tank be full ..?

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