Find the interest rates earned on each of the following. Round your answers to the nearest whole number. a. You borrow $720 and promise to pay back $792 at the end of 1 year, 10 % b. You lend $720 and the borrower promises to pay you $792 at the end of 1 year. 10 % c. You borrow $83,000 and promise to pay back $288,720 at the end of 11 years. % d. You borrow $12,000 and promise to make payments of $2,771.70 at the end of each year for 5 years. 5 %