Youve observed the following returns on Crash-n-Burn Computers stock over the past five years: 20 percent, 12 percent, 17 percent, 20 percent, and 10 percent. Suppose the average inflation rate over this period was 1.7 percent and the average T-bill rate over the period was 4.6 percent.

What was the average real risk-free rate over this time period?

What was the average real risk premium? (Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.)

I need how to know how to do this step by step.