You purchased a newly issued 25-year, 7.2 percent coupon bond that was priced at 105.41% of

par TEN years ago. The bond paid tri-annual coupons (i.e., once every four months).

Right after you purchased the bond, interest rates on comparable bonds rose to 7.5 percent

and remained unchanged since then. You just liquidated your position by selling the bond for

its market price at the end of your 10-year horizon. Calculate the (annual) rate of return

realized on your investment.