Shanken Corp. issued a 10-year, 6 percent semiannual bond 2 years ago. The bond currently sells for 95 percent of its face value. The book value of the debt issue is $55 million. In addition, the company has a second debt issue on the market, a zero coupon bond with 15 years left to maturity; the book value of this issue is $30 million and the bonds sell for 55 percent of par. The company's tax rate is 40 percent.

What is the company's total book value of debt?

What is the company's total market value of debt?

What is your best estimate of the aftertax cost of debt?