Comparing Repayment Options for Tebogo's Father

To determine whether Tebogo's father is correct in choosing Option 1 over Option 2, let’s calculate the total amount to be repaid for both options. ### Option 1: Simple Interest Simple interest is calculated using the formula: \[ \text{Simple Interest} = P \times r \times t \] Where: - \( P \) is the principal amount (R5 425) - \( r \) is the interest rate (9.7% or 0.097) - \( t \) is the time in years (2 years) First, calculate the interest: \[ \text{Interest} = R5 425 \times 0.097 \times 2 \] \[ \text{Interest} = R5 425 \times 0.194 \] \[ \text{Interest} = R1 051.45 \] Thus, the total amount to be repaid for Option 1 is: \[ \text{Total Amount} = P + \text{Interest} \] \[ \text{Total Amount} = R5 425 + R1 051.45 \] \[ \text{Total Amount} = R6 476.45 \] ### Option 2: Compound Interest Compound interest is calculated using the formula: \[ A = P \left(1 + \frac{r}{n}\right)^{nt} \] Where: - \( A \) is the amount of money accumulated after n years, including interest. - \( P \) is the principal amount (R5 425) - \( r \) is the annual interest rate (9.5% or 0.095) - \( n \) is the number of times interest is compounded per year (1 for yearly) - \( t \) is the time the money is invested for in years (2 years) First, calculate the amount: \[ A = R5 425 \left(1 + \frac{0.095}{1}\right)^{1 \times 2} \] \[ A = R5 425 \left(1 + 0.095\right)^2 \] \[ A = R5 425 \left(1.095\right)^2 \] \[ A = R5 425 \left(1.199025\right) \] \[ A = R6 504.21 \] ### Comparison - **Option 1 Total Amount**: R6 476.45 - **Option 2 Total Amount**: R6 504.21 Based on the calculations, Option 1 requires repaying R6 476.45, while Option 2 requires repaying R6 504.21. Therefore, Tebogo's father is correct; Option 1 is indeed the better option, as it results in a lower total repayment amount.