Out of three workers A, B and C, A can do a piece of work in 36 days, and B in 54 days. With the help of C they finished the work in 18 days. Out of the total payment of Rs. 18,000, how much should be given to C ?
1
Rs. 3,500
2
Rs. 3,000
3
Rs. 2,500
4
Rs. 2,000