Mathematics · Pipes and Cisterns
Tap S alone fills a cistern in 2 hours, while tap T alone fills the same cistern in 3 hours. A new tap U attached to the bottom of the cistern can empty the completely filled cistern in 6 hours. Sunny started all three taps together at 9 a.m. When will the tank be full?
- 19:45 a.m.
- 210:30 a.m.✓
- 312 p.m.
- 411:15 a.m.
Correct answer
10:30 a.m.
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