You've observed the following returns on Pine Computer's stock over the past five years: -24.9 percent, 13.6 percent, 30.2 percent, 2.3 percent, and 21.3 percent. The average inflation rate over this period was 3.23 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? Note: 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? Note: Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16