1.

Pipe A can fill an empty tank in 5 hours while pipe B can empty the full tank In 6 hours. If both are opened at the same time in the empty tank, how much time will they take to fill it up completely?

Answer»

Pipe A can fill an empty tank in 5 hours while pipe B can empty the full tank In 6 hours. If both are opened at the same time in the empty tank, how much time will they take to fill it up completely?



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