(C) Find the present value of the given (ordinary) annuity, (i) K4500 every 6 months for 4 years at the rate of 6% compounded semi-annually. [2 marks] (ii) K 8000 per month for 15 months at the rate of 12% compounded monthly. [2 marks] (iii) K1800 per year for 6 years at the rate of 15% compounded annually. [2 marks]