Radha sells two items A and B having cost prices are Rs. 500 and Rs. 700 respectively. She offers a discount of 5% on both items. The ratio between the marked price of item A and B is 7 : 9. Total profit earned by Radha is Rs. 320. Find the difference between the marked price of two items.
1
Rs. 300
2
Rs. 320
3
Rs. 200
4
Rs. 250
5
Rs. 106