10. Assume the total cost of a college education will be $400,000 when your child enters college in 18 years. You presently have $80,000 to invest. What annual rate of interest must you earn on your investment to cover the cost of your child's college education? 11. You are scheduled to receive $30,000 in two years. When you receive it, you will invest it for six more years at 5.8 percent per year. How much will you have in eight years