Mathematics · Time and Work
Two pipes A and B can fill a tank in 15 hours and 20 hours, respectively. If both are opened together, and after 4 hours pipe B is closed, how much more time will pipe A take to fill the remaining part of the tank?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 19 hours
- 27 hours
- 38 hours✓
- 410 hours
Correct answer
8 hours
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