Shanken Corp. issued a 25-year, 4.7 percent semiannual bond 2 years ago. The bond currently sells for 94 percent of its face value. The company's tax rate is 22 percent.

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