Between 1965 and 1980, the world population grew at an annual rate of 2%. Using the rule of 72, population is expected to double in

Question

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The rule of 72 states that the number of years it takes for a population to double is approximately 72 divided by the annual growth rate. In this case, the annual growth rate is 2%, so the population is expected to double in 72 / 2 = 36 years.

Between 1965 and 1980, the World Population Grew at an Annual