How long will it take to double your money with an interest rate of 10 percent? 20 percent? 40 percent?
What about tenfold increase in your money with a growth rate of 50 percent?
On the advice of your broker ten years ago, you invested in a $6 stock that is now selling for $30. At what rate has your capital grown?
Your father is about to retire. His firm has given him the option of retiring with a lump sum of $50,000 or an annuity of $8,000 for ten years. Which is worth more now, if the discount rate is (1) 6%, (2) 18%?
You are offered a $15,000 life insurance policy requiring thirty annual payments of $195 each. What is the compound value of the payments that you will have made after the policy is paid up, assuming that the discount rate is 10 percent?