A large tanker can be filled by 2 pipes A and B in 60 minutes respectively. How many minutes will it take to fill the tanker from empty state if B is used for half the time and A &B fill it together for the other half time ..?

A large tanker can be filled by 2 pipes A and B in 60 minutes respecti

1.	A large tanker can be filled by 2 pipes A and B in 60 minutes respectively. How many minutes will it take to fill the tanker from empty state if B is used for half the time and A &B fill it together for the other half time ..?
A.	15 min
B.	20 min
C.	27.5 min
D.	30 min
Answer» E.

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A large tanker can be filled by 2 pipes A and B in 60 minutes respectively. How many minutes will it take to fill the tanker from empty state if B is used for half the time and A &amp;B fill it together for the other half time ..?

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A large tanker can be filled by 2 pipes A and B in 60 minutes respectively. How many minutes will it take to fill the tanker from empty state if B is used for half the time and A &B fill it together for the other half time ..?