Two pipes A and B can fill up a tank in 6 minutes and 7minutes respectively.If they are opened for one minute alternately,A beginning,in how much time will they fill up the tank?

Two pipes A and B can fill up a tank in 6 minutes and 7minutes resp

1.	Two pipes A and B can fill up a tank in 6 minutes and 7minutes respectively.If they are opened for one minute alternately,A beginning,in how much time will they fill up the tank?
A.	6(3/7)mints
B.	7mints
C.	6mints
D.	3mints
Answer» B. 7mints

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Two pipes A and B can fill up a tank in 6 minutes and 7minutes respectively.If they are opened for one minute alternately,A beginning,in how much time will they fill up the tank?

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