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1. An amount of R25 000 is invested at an interest rate of 11% per annum compounded half-yearly for n years. Find the value of n if at the end of this period the investment has accumulated to R58 890.

2. R2 000 is invested at 10% per annum compounded half-yearly. After three months, the interest rate changes to 12% per annum compounded monthly. Find the value of the investment after two years.

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Statistics and Probability, Statistics

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