Fifteen years ago, you deposited $12,500 into an investment fund. Five years ago, you added an additional $20,000 to that account. You earned 8%, compounded semi-annually, for the first ten years, and 6.5%, compounded annually, for the last five years. Required:

a. What is the effective annual interest rate (EAR) you will get for your investment in the first 10 years?

b. How much money do you have in your account today?

c. If you wish to have $85 000 now, how much money should you invested 15 years ago?