An investor pays $500,000 for a mine that will produce level annual revenue for 17 years. What should the leve annual revenue be (received at the end of each year) if the investor is to receive 4.5% annual return on th investment while recovering the principal in a sinking fund earning 3% per year? An investor pays $500,000 for a mine that will produce level annual revenue for 17 years. What should the leve annual revenue be (received at the end of each year) if the investor is to receive 4.5% annual return on th investment while recovering the principal in a sinking fund earning 3% per year