Approximately how many years would it take for an investment to grow twofold if it were invested at 15 percent compounded
quarterly​? Assume that you invest $1 today.
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Part 1
If you invest ​$1 at 15 percent compounded quarterly​, about how many years would it take for your investment to grow twofold to ​$2​?
​(Hint​: Remember to convert your calculator solution to​ years.) enter your response here years ​(Round to one decimal​ place.)