The Rule of 72 estimates the number of years required to double the amount of money invested. It assumes the principal is compounded annually. Note, accurate for interest rates below twenty percent.
Solving for annual interest rate.
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| years to double investment (y) | = | 0 | = | 0 |
| annual interest rate (i) | = | HAS NOT BEEN CALCULATED |
| years to double investment | |
| annual interest rate |
AJ Design - Online Science Mathematics Engineering Software Programs | 2 | 3 | 4 | 5
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