4. Find the duration of a 8-year bond with a 10% coupon paid semi-annually, selling at 10% YTM.

5. Find the duration of a 8-year bond with a 30% coupon paid semi-annually, selling at 10% YTM.

6. What is the duration of a 4-year semi-annual coupon bond that has coupon rate of 10% and has YTM of 12%? Use $1000 as the face value.

a. What is the duration of a 4-year zero-coupon bond that is yielding 11.5%? Use $1000 as the face value.

b. Given these answers, how does duration differ from maturity?