The correct answer is a. $232.66.
Calculate the monthly interest rate: Divide the APR by 12 and convert to a decimal: 29.99% / 12 = 0.0249925 ≈ 0.0025
Create a spreadsheet: In one column, list the outstanding balance at the beginning of each month. In another column, calculate the interest paid each month by multiplying the previous month's balance by the monthly interest rate. In a third column, subtract the monthly payment from the previous month's balance to find the new outstanding balance.
Continue filling the spreadsheet until the balance reaches zero. In this case, it will take approximately 11.25 months for the customer to pay off the balance.
Sum the interest paid each month: This will give you the total amount of interest paid. In this case, the total interest paid will be approximately $232.66.
Therefore, option a) is the correct answer.