Go to finra-markets.morningstar.com, enter SNA as the company, and find the yield to maturity for each of SNAs bonds. What is the weighted average cost of debt for SNA using the book value weights and using the market value weights? Does it make a difference in this case if you use book value weights or market value weights? You now have all the necessary information to calculate the weighted average cost of capital for SNA. Calculate the WACC using book value weights and market value weights. SNA has a 21 percent tax rate. Which number is more relevant? Explain and answers! I need help!