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If population increases from 45 lakh to 54 lakh what are absolute increase and percentage growth?

Answer and explanation

Correct answer: 9 lakh and 20 percent

The correct answer is A: the absolute increase is 9 lakh and the percentage growth is 20%. First find the numerical change: final population minus initial population equals 54 lakh minus 45 lakh, which is 9 lakh. Next compare this increase with the original population, because percentage growth is calculated using the initial value as the base. Thus, percentage growth = (9 ÷ 45) × 100 = 20%. Option A gives both results correctly. B is wrong because 9 lakh is not 10% of 45 lakh; it is one-fifth, or 20%. C is wrong because 54 lakh is the final population, not the increase. D is wrong because 99 lakh is the sum of the two populations, not their difference, and 9% is also incorrect. Memory cue: subtract first, then divide the increase by the starting population and multiply by 100.

Related tags

Absolute IncreasePercentage GrowthPopulation CalculationPopulation GrowthPopulationGeographyClass 9 Mcq

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