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If population increases from 75 lakh to 90 lakh what are absolute increase and percentage growth?

Answer and explanation

Correct answer: 15 lakh and 20 percent

Correct answer: A, 15 lakh and 20 percent. First find the absolute increase: final population minus initial population = 90 lakh − 75 lakh = 15 lakh. Next calculate percentage growth using the initial population as the base: (increase ÷ initial population) × 100 = (15 ÷ 75) × 100 = 20%. A is correct because both parts use the proper steps. B is wrong because 15 is not 25% of 75; it is one-fifth, or 20%. C is wrong because 90 lakh is the final population, not the increase. D is wrong because populations are not added to find growth, and its percentage is also incorrect. A useful rule is: absolute growth = final − initial; percentage growth = absolute growth ÷ initial × 100.

Related tags

Absolute IncreasePercentage GrowthPopulation CalculationPopulation GrowthPopulationGeographyClass 9 Mcq

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