Question: Using the Rule of 72, how many years does it take to double a $7,500 investment when interest rates are 4.4% per year? 32.7 45.5

Using the Rule of 72, how many years does it take to double a $7,500 investment when interest rates are 4.4% per year?"

32.7

45.5

16.4

17.1

15.7

22.7

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