The number of years it will take for a country?s population to double can be found by dividing 72 by the population growth rate.

Name: The number of years it will take for a country?s population to double can be found by dividing 72 by the population growth rate.
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This is known as the Rule of 72, a simple formula used to estimate the number of years required to double the population at a constant annual growth rate.

The Number of Years It Will Take for a Country?s