Maths Two taps A and B can fill a tank in 15 minutes and 12 minutes respectively and third tap C can empty the full tank in 6 minutes. First A and B are open for 5 minutes and after that C is also opened. In how much time will the tank be empty?
| Q.201504: Two taps A and B can fill a tank in 15 minutes and 12 minutes respectively and third tap C can empty the full tank in 6 minutes. First A and B are open for 5 minutes and after that C is also opened. In how much time will the tank be empty? |
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