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How long will it take for a population of 100000 individuals to double at a growth rate of 3 percent per year?
Wiki User
∙ 13y ago
Anything that grows at the rate of 3 percent per year will double in 23.45 years.
It doesn't matter what size it was when it began.
One quick way to estimate the doubling time use the rule of 72. Divide 72 by the interest rate and when doing so leave the rate as a percent. So in this case we have 72 divided by 3=24 which is a pretty good estimate. You can improve on it slightly with the rule of 69. To use this rule, start with 69 and divide by the interest rate or growth rate and add .35. Both of these are commonly used for money, but the idea can be generalized. In this case it would be 69/3 +.35=23.35
Wiki User
∙ 13y ago
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