Question: Using the Rule of 72, how many years does it take to double a $4,450 investment when interest rates are 5.0% per year? 13.7 20.0

Using the Rule of 72, how many years does it take to double a $4,450 investment when interest rates are 5.0% per year?" 13.7 20.0 28.8 40.0 14.4 15.1

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