A water tank is two-fifth full.Pipe A can fill a tank in 10 minutes and pipe B can empty it in 6 minutes.If both the pipes are open,how long will it take to empty or fill the tank completely?

A) 6 min.to empty

B) 6 min.to fill

C) 9 min.to empty

D) 9 min.to fill

View Answer
Option – A.