Ewha Corp is trying to determine its cost of debt. The firm has a debt issue outstanding with 12 years to maturity that is quoted at 110 percent of face value. The issue makes semiannual payments and has an embedded cost of 10 percent annually. a. What is the company's pretax cost of debt? b. If the tax rate is 35 percent, what is the after-tax cost of debt? Ewha Corp has 10 million shares of common stock outstanding. The current share price is $66. and the book value per share is $6. Ewha Corp also has two bond issues outstanding. The first bond issue has a face value of $70 million, has a 6 percent coupon, and sells for 93 percent of par. The second issue has a face value of $55 million, has an 8 percent coupon, and sells for 104 percent of par. The first issue matures in 21 years, the second in 6 years. a. What is Ewha Corp's capital structure weight of the equity on a book value basis? b. What is Ewha Corp's capital structure weight of the equity on a market value basis? c. Which are more relevant, the book or market value weights