Mathematics · Time and Work
Pipe A takes 6 hours to fill up a half-filled tank, while pipe B will fill up a quarter-filled tank in the same time. How long will it take the two pipes working together to fill up the tank when it is already three-eighth fille d?
- 13 hours✓
- 22 hours 12 minutes
- 31 hour 48 minutes
- 48 hours
Correct answer
3 hours
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