Shanken Corp. issued a bond with a maturity of 20 years and a semiannual coupon rate of 6 percent 2 years ago. The bond currently sells for 92 percent of its face value. The company’s tax rate is 35 percent.

a. What is the pretax cost of debt? (Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places (e.g., 32.16).)

b. What is the aftertax cost of debt? (Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places (e.g., 32.16).)