A borrowed a sum of Rs.9000 from B at the rate of 15% for 2 years. A, then added some more money to the borrowed sum and lent it to C at the rate of 20% of simple interest for 3 years. If A gained Rs.4500 in the whole transaction, then what sum did he lend to C?
1
Rs. 12000
2
Rs. 9000
3
Rs. 18000
4
Rs. 15000
5
Rs. 14000