Final answer:
The annual repayment would be $3,000. The total cash repayment would be $30,000. They would not have paid any interest on the loan.
Step-by-step explanation:
To calculate the annual repayment amount, we can divide the total loan amount ($30,000) by the number of years (10). So, the annual repayment would be $3,000.
To calculate the total cash repayment for the loan over the period, we can multiply the annual repayment amount ($3,000) by the number of years (10). The total cash repayment would be $30,000.
To calculate the interest paid on the loan, we can subtract the original loan amount ($30,000) from the total cash repayment ($30,000 - $30,000 = $0). So, they would not have paid any interest on the loan.