Mathematics · Pipes and Cisterns
Two pipes can fill a cistern in 3 hours and 3 hours 45 minutes respectively, and a third pipe can empty the whole cistern in 1 hour. If the cistern is half filled with water and all three pipes are opened together, after how much time will the cistern be emptied?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 11 hour 45 minutes
- 21 hour 30 minutes
- 345 minutes
- 41 hour 15 minutes✓
Correct answer
1 hour 15 minutes
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