Assume the total cost of a college education will be $335,000 when your child enters college in 15 years. You presently have $53,000 to invest. What annual rate of interest must you earn on your investment to cover the cost of your child's college education? Note: Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16. Annual rate % Your coin collection contains 59 1952 silver dollars. If your grandparents purchased them for their face value when they were new, how much will your collection be worth when you retire in 2053, assuming they appreciate at an annual rate of 6.6 percent? Note: Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16. Value of collection