Tyler invested in company stock in the year 1985. The annual yield for his investment was 5.7%; however, the inflation rate was 8.2%.

(a) What was the real growth rate of this investment?
Answer: %

(b) Suppose Tyler wants to make a better investment that will have a real growth rate of 9.8%. What annual interest rate will he need to earn on his investment to accomplish his goal?
Answer: %