A large tanker can be filled by two pipes A and B in 60 minutes and 40 minutes r

Question

A large tanker can be filled by two pipes A and B in 60 minutes and 40 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 and B fill it together for the other half?

Options:

A . 15 minutes

B . 20 minutes

C . 27.5 minutes

D . 30 minutes

Answer: Option D

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