Calculating the Number of Periods [LO4] Solve for the unknown number of years in each of the following: Present Value Years Interest Rate Future Value $560 9% $1,284 810 10 4,341 18,400 17 364,518 21,500 15 173,439 Calculating Interest Rates [LO3] Assume the total cost of a college education will be $290,000 when your child enters college in 18 years. You presently have $55,000 to invest. What annual rate of interest must you earn on your investment to cover the cost of your child's college education? PART 3 Valuation of Future Cash Flows Calculating the Number of Periods [LO4] At 7 percent interest, how long does it take to double your money? To quadruple it? Calculating Interest Rates [LO3] In