Mathematics · Time and Work
Two pipes, A and B, can fill a tank in 12 hours and 16 hours, respectively. A third pipe, C, can empty the tank in 20 hours. If all three are opened together but pipe C is closed after 4 hours, how long will it take to fill the tank completely? (Rounded to one decimal place)
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 14.2 hours
- 29.1 hours
- 38.2 hours✓
- 46.4 hours
Correct answer
8.2 hours
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