Bond valuation and yield to maturity

Personal Finance Problem

Mark Goldsmith's broker has shown him two bonds issued by different companies. Each has a maturity of $4$ years, a par value of $$1,000,$ and a yield to maturity of $8\mathrm{.}20\%.$ The first bond is issued by Crabbe Waste Disposal and has a coupon interest rate of $6\mathrm{.}321\%$ paid annually. The second bond, issued by Malfoy Enterprises, has a coupon interest rate of $8\mathrm{.}80\%$ paid annually.