Mathematics · Time and Work
Pipe A can fill a cistern in 18 hours, and Pipe B can fill it in 12 hours. However, there is a leakage in the cistern that can empty it in 36 hours. If both pipes and the leakage are active, how long will it take to fill 13rd part of the cistern?
- 11 hour
- 23 hours
- 34 hours
- 42 hours✓
Correct answer
2 hours
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