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If population increases from 64 lakh to 80 lakh what is the growth percentage?

Answer and explanation

Correct answer: 25 percent

Direct answer: C, 25%. First find the absolute increase: 80 lakh − 64 lakh = 16 lakh. Next compare that increase with the initial population, not the final population: growth percentage = (16 ÷ 64) × 100 = 0.25 × 100 = 25%. The unit “lakh” cancels because both values use the same unit. A, 16%, incorrectly uses the increase as the percentage without comparing it with the base. B, 20%, does not result from the correct denominator. C is correct because it uses the standard percentage-growth formula. D, 40%, is an overestimate and may arise from an incorrect operation. Always use the initial population as the base unless the question gives another definition. Memory cue: increase ÷ initial value × 100.

Related tags

Percentage Growth64 Lakh80 LakhPopulation CalculationPopulation GrowthPopulationGeographyClass 9 Mcq

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