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If population was fifty lakh last decade and is now sixty lakh, what is the approximate growth percentage?

Answer and explanation

Correct answer: Twenty percent

Answer: B, the approximate growth percentage is 20%. First find the increase: 60 lakh − 50 lakh = 10 lakh. Then compare this increase with the earlier population, not the current population. Growth percentage = (increase ÷ earlier population) × 100 = (10 ÷ 50) × 100 = 20%. A is wrong because 10 lakh is the absolute increase, not the percentage. C is wrong because 50 lakh is the earlier population, not the calculated rate. D is wrong because 60 lakh is the current population and is not itself a percentage. The denominator matters: percentage growth is measured from the starting population. Memory cue: subtract first, then divide by the old population, and finally multiply by 100.

Related tags

Growth PercentageCalculationDecadal GrowthPercentage FormulaPopulation GrowthPopulationGeographyClass 9 Mcq

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