Mathematics · Pipes and Cisterns
Pipes A and B can fill a tank in 15 hours and 20 hours, respectively. Pipe C is an emptying pipe. A and B are opened together for 4 hours, and then, only A is closed and C is opened. It took 1915 hours more to fill the tank. Pipe C alone can empty the full tank in:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 140 hours
- 245 hours✓
- 348 hours
- 442 hours
Correct answer
45 hours
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