What is the current yeild of the bond in part a, b, and, c?

a. A(n)3.54%,19-year bond quoted at 39.640 . b. A(n) 5.90%,28-year bond quoted at 66.066 . c. A(n)1.77%,23-year bond quoted at 19.820 . The current yield of the bond in part a is \%. (Round to two decimal places.)