An investor is considering purchasing a bond with a 4.27 percent coupon interest rate, a par value of $1,000, and a market price of $820.41. The bond will mature in nine years. Based on this information, answer the following questions: a. What is the bond's current yield? b. What is the bond's approximate yield to maturity? c. What is the bond's yield to maturity using a financial calculator? a. The bond's current yield is \%. (Round to two decimal places.)