Answer:
It would take 11.08 years to double up the initial investment.
Step-by-step explanation:
Remember that the formula we use for the rule of 72 is:
[tex]t=\frac{72}{r}[/tex]Where:
• t, is the number of periods it will take the investment to double up
,• r, is the rate of return of the investment, expressed as a percentage
Using the rate given, we'll have that:
[tex]\begin{gathered} t=\frac{72}{6.5} \\ \\ \Rightarrow t=11.08 \end{gathered}[/tex]Therefore, we can conlcude that it would take 11.08 years to double up the initial investment.
