Final answer:
To calculate the APR, follow these steps: Calculate the total amount paid over 30 years, subtract the original loan amount from the total amount paid, divide the interest paid by the loan amount, and multiply the result by 100 to convert to a percentage.
Step-by-step explanation:
To calculate the APR, we can follow these steps:
- Calculate the total amount paid over 30 years: 30 years * 12 months = 360 months * $500 = $180,000.
- Subtract the original loan amount from the total amount paid: $180,000 - $120,000 = $60,000.
- Divide the interest paid by the loan amount: $60,000 / $120,000 = 0.5.
- Multiply the result by 100 to convert to a percentage: 0.5 * 100 = 50%.
Therefore, the APR is 50%.