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[" A cistern has two inlets "A" and "B" ...

[" A cistern has two inlets "A" and "B" which can fill it in i "2" minutes and "15" minutes respectively."],[" an outlet "C" can empty the full cistern-in "10" minutes.If all the three pipes are opened "],[" together in the empty tank,how much time will they take to fill the tank completely? "],[" aipe can fill a cistern in "]

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A cistern has two inlets A and B which can fill it in 12 minutes and 15 minutes respectively. An outlet C can empty the full cistern in 10 minutes.If all the three pipes are opened together in the empty tank,how much time will they take to fill the tank completely?

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