Mathematics · Time and Work
P alone can fill a tank in 15 hours. Q alone can fill the same tank in 45 hours. R alone can empty the same tank in 22.5 hours. How long will it take all three of them together to fill the same tank?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 125 hours
- 224 hours
- 322.5 hours✓
- 426 hours
Correct answer
22.5 hours
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