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Two taps can fill a tank in 10 and 12 minutes respectively and a third tap can empty it in 15 minutes.If all the three taps are opened at the same time,in how much time the tank will be filled? ?->(Show Answer!)
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1. Two taps can fill a tank in 10 and 12 minutes respectively and a third tap can empty it in 15 minutes.If all the three taps are opened at the same time,in how much time the tank will be filled?





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