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A country's population rises from 60 million to 71.4 million. What is the percentage population growth over the period?

Answer and explanation

Correct answer: 19 percent

Percentage growth compares the increase with the original population, not with the final population. The population rises by 11.4 million, from an initial 60 million. Therefore, the increase is a substantial fraction of the starting population, and the correct choice is 19 percent.

The calculation is: increase = 71.4 - 60 = 11.4 million. Percentage growth = \(\frac{11.4}{60}\times100\) = 19 percent. Thus option C is correct. Dividing by 71.4 would calculate a different proportion and would not represent growth from the original population. The unit, whether millions or crores, cancels in the ratio.

Related tags

Percentage Population GrowthAbsolute GrowthPopulation CalculationDemography MathsPopulation GrowthThe World Population – DistributionDensity And GrowthThe World Population Distribution Density And Growth

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