A and B started a business with initial investments of Rs. 15000 and Rs. 25000 respectively. After one year, a profit of Rs. 20000 is earned. A being a working partner gets 32% of the profit for managing the business and rest of the profit is shared between them in the ratio of their investments. A invested his whole profit in a scheme offering 10% compound interest compounded annually. Find the interest earned by A after 2 years.