Question: Problem 9-21 Future value (LO9-2] At a growth (interest) rate of 21 percent annually, how long will it take for a sum to double? To
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Problem 9-21 Future value (LO9-2] At a growth (interest) rate of 21 percent annually, how long will it take for a sum to double? To triple? Use Appendix A for an approximate answer, but calculate your final answer using the formula and financial calculator methods. (Do not round intermediate calculations. Round your final answers to 2 decimal places.) Time needed to double years Time needed to triple years
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