‘C’ and ‘D’ started a business by investing Rs. 30,000 and Rs. 25,000, respectively. ‘D’ manages the business and for that he is entitled to receive a commission of 20% out of the total profit, while the rest of the profit is divided among them in the ratio of their investments. If at the end of the year, ‘C’ received a profit of Rs. 15,000, then find the total amount received by ‘D’ at the end of the year.