'A' and 'B' started a business by investing Rs. 8,000 and Rs. 10,000, respectively. 'A' invested for 10 months and 'B' invested for 12 months. 'A' also works as manager in the business for which he's entitled to receive a commission of 20% out of total profit. If at the end of the year, the business earned a total profit of Rs. 12,500, then find the total amount received by 'A'.