8) The present value of $200 paid at the end of n years, plus the present value of $100 paid at the end of 2n years is $200. Determine the annual effective rate of interest. (21)1/1 1 b) 1-4-2)/ c) Chun)1 - 1 d) -)/2n 3+1 -1 e) 1-03-1)/21