Mathematics · Pipes and Cisterns
Two pipes S1 and S2 alone can fill an empty tank in 15 hours and 20 hours respectively. Pipe S3 alone can empty that completely filled tank in 40 hours. Initially, both pipes S1 and S2 are opened, and after 2 hours, pipe S3 is also opened. In how much time will the tank be completely filled after S3 is opened?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 192/11 hours✓
- 290/13 hours
- 389/12 hours
- 490/17 hours
Correct answer
92/11 hours
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