Mathematics · Time and Work
Two taps A and B can fill a cistern in 12 min and 16 min respectively. If both taps are opened together and, at the end of 4 min, tap B is turned off, how much total time will it take from the start to fill the cistern?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 111 min
- 29 min✓
- 310 min
- 48 min
Correct answer
9 min
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