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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 an empty state, if B is used for half the time and A and B fill it together for the other half? |
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Answer» 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 an empty state, if B is used for half the time and A and B fill it together for the other half?
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