Question

If the interest earned by a CD is compounded continuously, which rule is most accurate when calculating how long it will take the money invested in the CD to double? A. Rule of 69 B. Rule of 72 C. Rule of 12 D. None of the above

Answer 1

69

Explanation:

Answer 2

For an investment compounded continuously, the rule of 69 gives a better approximation than the rule of 72 (for normal compound interests).