Section 1

Try This 2

• Search the Internet for a “Rule of 72 Calculator.” Find a calculator you like and use it to investigate the question in the next bullet.
  
  
• You have seen that the interest rate affects the doubling time of the investment, but does the amount of money you invest have any effect on the investment’s doubling time?

Save your responses to your course folder.

Share 2

Share your Rule of 72 Calculator link, found in Try This 2, with a partner or group. Discuss the following question:

• What effect does the amount of money you invest have on the doubling time of the investment?

If required, save a copy of the discussion to your course folder.

Caution: Remember that the Rule of 72 uses percentages instead of the decimal equivalent. If you are given a rate of 0.06, you will first rewrite the rate as 6%.