Answer: 5.46%
Explanation:
You can use excel to solve for this.
Number of periods = 30
Coupon = Payment = 8% * 100 = $8
PV = $137.11
FV = $100 par value
Do this and the YTM would be: 5.46%
This makes sense because the bond is trading at a premium which means that the YTM is less than the coupon rate.