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If an area has a growth rate of 2% and a base population of 50 lakh, what will be the absolute increase?

Answer and explanation

Correct answer: 1 lakh

The direct answer is B, 1 lakh. Absolute increase means the actual number of people added, not the percentage itself. Convert 2% into a fraction: 2/100. Now multiply it by the base population: (2/100) × 50 lakh = 1 lakh. Thus, the population increases by 1 lakh people. A is wrong because 50 thousand is only half of the calculated increase. B is correct. C is wrong because it treats 2% of 50 lakh as 2 lakh; that would be 4%. D is wrong because 10 lakh would represent 20% of 50 lakh. The base population is essential because the same percentage produces different numerical increases on different bases. Memory cue: percentage increase = rate × base population.

Related tags

Growth RateAbsolute IncreaseBase PopulationPercentage CalculationPopulation GrowthPopulationGeographyClass 9 Mcq

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