arch$1963,$ Ironman was first introduced in issue number $39$ of Tales of Suspense. The original price for that issue was $18$ cents. By March of $2015,52$ years$$ later, the value of this comic book had risen to $$$$14$ comma $315.$ What annual rate of interest would you have earned if you had bought the comic in $1963$ and sold it in $2015(52$ years$$ later$)?$ In March $1963,$ Ironman was first introduced in issue number $39$ of Tales of Suspense. The original price for that issue was $18$ cents. By March of $2015,52$

years later, the value of this comic book had risen to $$14,315.$ What annual rate of interest would you have earned if you had bought the comic in $1963$ and

sold it in $2015(52$ years later$)?$

The annual rate of interest you would have earned if you had bought the comic in $1963$ and then sold it in $2015(52$ years later$)$ is

$\%.($Round to three

decimal places.$)$