Mathematics · Work and Time
P can fill a tank in 5 hours, Q can fill the same tank in 10 hours, and R can empty it in 20 hours. How much time will all three pipes take together to fill the completely empty tank?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 15 hours
- 26 hours
- 34 hours✓
- 410 hours
Correct answer
4 hours
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