Youve observed the following returns on Yamauchi Corporations stock over the past five years: 25.5 percent, 14 percent, 31 percent, 2.5 percent, and 21.5 percent. The average inflation rate over this period was 3.25 percent and the average T-bill rate over the period was 4.3 percent. a. What was the average real risk-free rate over this time period? (Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.) b. What was the average real risk premium? (Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.)