Using the Rule of 72, approximate the following amounts.

a.	If the value of land in an area is increasing 6.5 percent a year, how long will it take for property values to double? (Round your answer to 1 decimal place.)

Time period

years

b.	If you earn 8.5 percent on your investments, how long will it take for your money to double? (Round your answer to 1 decimal place.)

Time period

years

c.	At an annual interest rate of 4.25 percent, how long will it take for your savings to double? (Round your answer to 1 decimal place.)

Time period

years