Kellogg has bonds outstanding which were issued in November 2009 and which mature in November 2019. The coupon rate of these bonds is 4.15% and...

Kellogg has bonds outstanding which were issued in November 2009 and which mature in November 2019. The coupon rate of these bonds is 4.15% and coupons are paid semiannually. This morning's paper quoted the bonds' price as 102.34.   

Write out the mathematical formula you would solve to find the yield to maturity of these bonds. Make sure you plug in numbers!

What is the yield to maturity of these bonds?