A and B started the business in the ratio of 4 : 6. After 4 months, B withdrew half of his initial investment and A left the business. After 2 more months, C joined with the investment of Rs 8000 which is 2000 more than the initial investment of B. At the end of the year, the difference between the profit share of A and C is Rs 2000. Then find the total profit of the business.