Mathematics · Time and Work
Pipe P and Pipe Q can fill a tank in 5 hours and 15 hours respectively. Pipe R can empty the same tank in 7.5 hours. How much time will all the three pipes take together to fill the completely empty tank?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 17.5 hours✓
- 23.5 hours
- 312.5 hours
- 42.5 hours
Correct answer
7.5 hours
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