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If the population increases from 20 lakh to 26 lakh, what are the absolute increase and percentage growth?

Answer and explanation

Correct answer: 6 lakh and 30 percent

The direct answer is A: the absolute increase is 6 lakh and the percentage growth is 30%. Solve it in two separate steps. Step 1: subtract the initial population from the final population: 26 lakh − 20 lakh = 6 lakh. This is the absolute increase, meaning the actual number added. Step 2: divide the increase by the initial population and multiply by 100: (6 ÷ 20) × 100 = 0.3 × 100 = 30%. The initial population must be used as the base when calculating growth percentage. Option A contains both correct results. Option B correctly gives the absolute increase but divides incorrectly; 6 is not 20% of 20, it is 30% of 20. Option C uses the final population as the increase, so its absolute figure is wrong, although its percentage is right. Option D adds the two populations instead of finding the difference and also gives the wrong percentage. Memory cue: first subtract for absolute increase, then divide by the original and multiply by 100 for percentage growth.

Related tags

Absolute IncreasePercentage GrowthPopulation CalculationDemographyPopulation GrowthPopulationGeographyClass 9 Mcq

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