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Pipe A and B together fill tank in 6 hours. Find time for specific condition.

1. 6/5 hours
2. 7/5 hours
3. 8/5 hours
4. 9/5 hours

Correct answer: 8/5 hours

Solution

Given pipes A and B fill tank together in 6 hours. With the given additional condition, the required time is 8/5 hours.

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