A certain sum of money is distributed among Ravi, Rahul, and Raj in ratio 8 : 5 : 7 in such a way that share of Ravi was Rs. 1000 less than that the sum of share of Rahul and Raj. Find the difference between the shares of Ravi and Raj?
1
Rs. 470
2
Rs. 360
3
Rs. 250
4
Rs. 110