SOLUTION: Please Help I dont understand the 72 Rule. Use the rule of 72 to estimate how long it would take a $30,000 deposit to double if you earn an annual interest rate of 12%

Algebra ->  Customizable Word Problem Solvers  -> Finance -> SOLUTION: Please Help I dont understand the 72 Rule. Use the rule of 72 to estimate how long it would take a $30,000 deposit to double if you earn an annual interest rate of 12%      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


   



Question 1109200: Please Help I dont understand the 72 Rule.
Use the rule of 72 to estimate how long it would take a $30,000 deposit to double if you earn an annual interest rate of 12%

Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

The rule says that to find the number of years required to double your money at a given interest rate, you just divide the interest rate into 72.

72%2F12=6 =>it will double in 6 years