Youve observed the following returns on Crash-n-Burn Computers stock over the past five years: 14 percent, 14 percent, 16 percent, 26 percent, and 10 percent. Suppose the average inflation rate over this period was 3.5 percent and the average T-bill rate over the period was 4 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,