Mathematics · Time and Work
Three pipes A, B and C can fill a tank in 10, 15, and 20 hours, respectively. All three are opened together. After 3 hours, pipe C is closed. How much more time will it take to fill the tank?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 12 hours and 24 minutes
- 22 hours and 6 minutes✓
- 31 hour and 48 minutes
- 42 hours
Correct answer
2 hours and 6 minutes
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