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If natural growth is -1.2 percent and net migration is +1.7 percent, what is the total growth rate?

Answer and explanation

Correct answer: +0.5 percent

Total growth is obtained by adding natural growth and net migration. The signs must be preserved: a negative natural growth rate represents a decline, while positive net migration represents an addition. One should not add the absolute magnitudes, because that would ignore whether each component raises or lowers population.

The calculation is \(-1.2+1.7=+0.5\) percent. Therefore, the total population increases by 0.5 percent, even though natural growth is negative. Option C is correct. The result is positive because the 1.7 percent net inflow is larger than the 1.2 percent natural decline. The value +2.9 percent would incorrectly treat both numbers as positive contributions.

Related tags

Natural DeclinePositive MigrationTotal GrowthPopulation BalancePopulation GrowthThe World Population – DistributionDensity And GrowthThe World Population Distribution Density And Growth

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