2. With an annual effective rate of interest i, here i>0, the following values are equal at =0: a) $1,000 b) the present value of $10,000 paid at the end of 10 years c) the sum of the present values of $8,800 paid at the end of year t and $11,200 paid at the end of year 21 Calculate the annual effective rate of interest i and the present value of $20,000 paid at the end of year t+5 using the same annual effective rate of interest. (15 marks)