Mathematics · Pipes and Cisterns
Pipe A can fill a tank in 12 hours, pipe B in 15 hours, and an outlet pipe C can empty it in 20 hours. A and B are opened together for 5 hours, and then C is also opened. Find the total time taken to fill the tank.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 15.5 hours
- 27.5 hours✓
- 36 hours
- 46.5 hours
Correct answer
7.5 hours
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