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If population changes from 70 lakh to 63 lakh what is the correct interpretation?

Answer and explanation

Correct answer: Decrease of 7 lakh and 10 percent decline

The correct answer is A. The final population is smaller than the initial population, so this is a decrease. The absolute decrease is 70 lakh − 63 lakh = 7 lakh. To calculate the percentage decrease, use the initial population as the base: (7 ÷ 70) × 100 = 10%. Therefore, the population declined by 7 lakh, or 10%. B is wrong because it calls a fall an increase. C is wrong because 63 lakh is the final population, not the amount of change. D is wrong because 133 lakh is obtained by adding the two figures, whereas change requires subtraction. Notice that the word ‘decrease’ or ‘decline’ is essential here. Memory cue: when the final value is lower, subtract final from initial and describe the result as a decrease, not growth.

Related tags

Population DeclinePercentage DecreaseAbsolute ChangePopulation GrowthPopulationGeographyClass 9 Mcq

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