A man has invested in two schemes in the ratio of 4 : 5. Smaller part is invested for two years at the rate of R% p.a. on SI and bigger part is invested at the rate of (R - 7)% p.a. for three years on S.I. The man got equal interest from both the parts. After that he invests Rs 22500 at the rate of (R +5)% p.a. for two years on C.I. then find the interest earned by man in two years?