a. At what nominal rate of interest, compounded quarterly, will an investment double in 20 years? [5 marks] b. An initial investment of RM240 grows at an annual rate of 8% compounded quarterly. Find how long it takes for the investment to amount to RM300. [5 marks] c. For an interest rate of 4% compounded monthly, find the present value of an annuity of RM150 at the end of each month for eight months and RM175 thereafter at the end of each month for a further two years. 15 marks] d. Says you borrow RM2000 and will pay off the loan by equal payments at the end of each month for five years. If interest is at the rate of 16.8% compounded monthly, how much is each payment? (5 marks] [Total: 20 marks]