Mathematics · Pipes and Cisterns
Two pipes A and B can fill a cistern in 9 minutes and 6 minutes respectively. Both pipes are opened simultaneously. After how much time should the second pipe B be closed so that the cistern is completely filled in 4 minutes?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 33 min✓
- 46 min
Correct answer
3 min
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