Consider two annual coupon bonds, A & B, which both have exactly 10 years until maturity. The bond just paid it's most recent Both bonds just paid their most recent annual coupons, so the next coupon for both bonds will be paid in exactly one year. Bond A has a coupon rate of 4% and a YTM of 5%. Bond B has a coupon rate of 9% and a YTM of 6%.

(a) What is the duration of bonds A and B individually?

(b) Create a portfolio that is equally weighted between bonds A & B. Calculate the duration of the bond portfolio.

(c ) How does the duration of the equal-weighted portfolio compare to the equal-weighted average of individual bond durations? Why?