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If previous population is sixty lakh and current population is seventy two lakh, what is the growth percentage?

Answer and explanation

Correct answer: Twenty percent

Correct answer: B, twenty percent. Growth percentage is calculated using the increase divided by the previous population, multiplied by 100. The increase is 72 lakh − 60 lakh = 12 lakh. Therefore, growth percentage = (12 ÷ 60) × 100 = 20%. The unit lakh cancels because both numbers use the same unit. Option A is wrong because 12 is one-fifth of 60, not one-tenth. Option C confuses the numerical increase, 12 lakh, with the percentage; 12 lakh is not 12% of 60 lakh. Option D incorrectly uses the current or another unrelated base and does not follow the formula. A useful check is that 20% of 60 lakh equals 12 lakh, so the answer is consistent. Memory cue: percentage growth uses the old population as the denominator.

Related tags

Growth PercentagePrevious PopulationCalculationPopulation GrowthPopulationGeographyClass 9 Mcq

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