Mathematics · Time and Work
Two pipes A and B can fill a tank in 20 minutes and 30 minutes, respectively. A third pipe C can empty the tank in 40 minutes. All three pipes are opened together, but after 5 minutes, pipe C is closed. What would be the total time required to fill the tank?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 113.50 minutes✓
- 28.66 minutes
- 311.25 minutes
- 49.66 minutes
Correct answer
13.50 minutes
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