A 14.05-year maturity zero-coupon bond selling at a yield to maturity of 7% (effective annual yield) has convexity of 110.5 and modified duration of 12.55 years. A 30-year maturity 5% coupon bond making annual coupon payments also selling at a yield to maturity of 7% has nearly identical modified duration-12.65 years-but considerably higher convexity of 300.5.

a. Suppose the yield to maturity on both bonds increases to 8%. What will be the actual percentage capital loss on each bond? What percentage capital loss would be predicted by the duration-with-convexity rule?

b.	Suppose the yield to maturity on both bonds decreases to 6%. What will be the actual percentage capital gain on each bond? What percentage capital gain would be predicted by the duration-with-convexity rule?