Both bond A and bond B have 10 percent coupons and are priced at par value. Bond A has 10 years to maturity, while bond B has 20 years to maturity.
If interest rates suddenly rise by 1 percent, what is the percentage change in price of bond A and bond B?
If interest rates suddenly fall by 1 percent instead, what would be the percentage change in price of bond A and bond B?