Mathematics · Time and Work
A cistern has two inlet pipes, A and B, and one outlet pipe, C. Pipe A can fill the cistern alone in 15 hours, pipe B in 18 hours, and pipe C can empty it in 27 hours. For the first 5 hours, pipes A and B are opened together. Then, for the next 12 hours, pipes B and C are opened together. After that, only pipe B works. How long will pipe B alone take to fill the remaining part of the cistern?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 16 hours
- 25 hours
- 33 hours✓
- 44 hours
Correct answer
3 hours
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