Mathematics · Time and Work
Two pipes T and U can fill an empty tank alone in 60 hours and 72 hours, respectively. Pipe V alone can empty the completely filled tank in 90 hours. Pipes T and U are opened first, and after 20 hours, pipe V is also opened. How long will it take in total to fill the tank completely?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 150 hours
- 245 hours
- 347 hours
- 440 hours✓
Correct answer
40 hours
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