The capital account of Arivazhagan and Srinivasan on 1st January 2017 showed a balance of
Rs.15,000 and Rs.10,000 respectively. On 1st July 2017, Arivazhagan introduced an additional capital of Rs.5,000 and on 1st September 2017 Srinivasan introduced an additional capital of Rs.10,000. Calculate interest on capital at 6% p.a. for the year ending 31st December 2017.