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A country has a population of 1.2 million and gains 120000 people over five years. What is the percentage growth over the whole period?

Answer and explanation

Correct answer: 10 percent

Percentage growth over the whole period is calculated by comparing the total increase with the initial population. The initial population is 1.2 million, or 1,200,000, and the increase is 120,000. Therefore, the calculation is \(\frac{120000}{1200000}\times100=10\%\). The five-year duration does not change the total percentage calculation requested here.

Hence option C, 10 percent, is correct. Dividing the increase by five would help find an average absolute annual increase, but it would not be needed for the total percentage growth. Also, the question does not ask for a compound annual growth rate, which would require a different formula. The key is to use the increase as the numerator and the starting population as the denominator.

Related tags

Five Year GrowthPercentage ChangePopulation CalculationPeriod GrowthPopulation GrowthThe World Population – DistributionDensity And GrowthThe World Population Distribution Density And Growth

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