need a bit of hekp thanks 4

Estimate the yield to maturity of a bond that is $1,000 parsemi-annual coupon payments, 25 years to maturity, 10% coupon, and is currently selling for $1,200. Note: Show your answer in units of percents, use plain numbers with at least two digits after the decimal (e.g., for 12.34%, type 12.34)