A dishonest merchant buys a certain amount of rice from farmers at the rate of Rs. 10/Kg and sells it at the rate of Rs. 12/Kg. But he uses 1100 g weight instead of 1 Kg weight while purchasing and uses 900 gram weights instead of 1 Kg weight while selling. What is the amount of rice that he sold if he makes an overall profit of Rs. 1400?