Pipe A can fill a tank in 12 minutes; pipe B can fill it in 18 minutes, while pipe can empty the full tank in 36 minutes…
Q1
Pipe A can fill a tank in 12 minutes; pipe B can fill it in 18 minutes, while pipe can empty the full tank in 36 minutes. If all the pipes are opened simultaneously, how much time will it take to fill the empty tank completely?
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