A water tank of capacity 9000 litres is installed. A water pump fills the tank at the rate of 100 litres/hr for the first hour. The water flow from the pump is 1.25th after each 1 hr. Q) How many hours will it take to fill the tank? Q) After 10 hours, how much water was filled in the tank? Q) After 15 hours how much water would have filled in the tank?