a tank can be filled by one tap in 20 minutes and by another in 25 minutes.both the taps are kept open for 5 minutes and then the second is turned off.in how many minutes more the tank will be completely filled?
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Answer:by another 25 minute. Both the taps are kept open for 5 minute and then second is turned off. In how many minute more is the tank completely filled. ... be filled in 11 minute. Hence, the tank will be full in 11 min more ... 2 taps be A and B. In 5 min A&B fill = 5(1/20 + 1/25) = 9/20 tank. Tap B is turned off. So,
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its not a complete answer
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