Answer: 48 quarters or 12 years
Step-by-step explanation:
You can use the Rule of 72 to estimate the amount of time it will take for an investment to double.
It works by dividing 72 by the interest rate per period.
The rate here is 6% but this is an annual rate yet the interest is to be compounded quarterly. You need to convert this annual rate to a quarterly rate:
= 6% / 4
= 1.5% per quarter
The amount of time it will take to double is:
= 72 / 1.5
= 48 quarters
In years that would be:
= 48 / 4
= 12 years
