PLEASE ANSWER THE QUESTION CORRECTLY

Calculate the Macaulay duration of a 9%,$1,000 par bond that matures in three years if the bonds YTM is 12% and interest is paid semiannually. a. Calculate this bond's modified duration. Do not round intermediate calculations. Round your answer to two decimal places. years b. Assuming the bond's yTM goes from 12% to 11.5%, calculate an estimate of the price change. Do not round intermediate calculations. Round your answer to three decimal places. Use a minus sign to enter negative value, if any