Approximately how long would it take to double my money if I invest it now at 18%?
A)6 years
B)4 years
C)12 years
D)It cannot be determined

Question

Quizplus · Accepted Answer

The rule of 72 states that if you divide 72 by the interest rate, you will get the number of years it takes for your investment to double. In this case, 72 divided by 18 is 4. Therefore, it will take approximately 4 years to double your money at an 18% interest rate.

Approximately How Long Would It Take to Double My Money