Answers to A=2.818 years

Need the Answer to B it is NOT 2.608 years

a. Find the duration of a 6.6% coupon bond making annual coupon payments if it has three years until maturity and has a yield to maturity of 6.6%. Note: The face value of the bond is $1,000. (Do not round intermediate calculations Round your answers to 3 decimal places.) 6.6% YTM years b. What is the duration if the yield to maturity is 9%? Note: The face value of the bond is $1,000. (Do not round intermediate calculations. Round your answers to 3 decimal places.) 10% YTM years