financial math assistance with a) c)

EXERCISE 1 (8) the accumulated amount after six years and the total interest he will receive, if the Trevor invests an amount of R20 000 in a bank. Calculate, using appropriate formulae, interest rate is: (1) 4,5% per annum simple interest (2) 4,5% per annum compound interest Refilwe wants to purchase a stove costing R12 000. She wants to pay back this amount (6) with interest in two years' time. The interest rate is 24% per annum simple interest. (1) Calculate the amount that she will repay in two years' time. (2) If she wants to pay the loan off in monthly payments over the two-year period, what will her monthly payments be? (0) Nceba invested R500 000 in the share market. He managed to secure an average compound interest rate of 14% per annum during the first two years. (1) Calculate the value of his investment at the end of the two-year period. (2) During the next three years, he managed to secure an average compound interest rate of 12% per annum. What was his investment then worth at the end of the next three years