Calculate the Macaulay duration of a 9%,51,000 porr bond that mstures in three years if the bonds yTM is 12% and interest is pald semiannually. a. Calculate this bond's modified duration. Do not round intermediate calculations. Round your answer to two decimal places. Yesin b. Assuming the bond yTM goes from 12% to 11.0W, calculate an estimate of the price change. Do hot round intermediate calculations. Round your answer to three docimal places. Use in minus sign to enter negstive value, If any