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A country has a population of 50 million and a total growth rate of negative 0.4 percent. What is the approximate population decrease in one year?

Answer and explanation

Correct answer: 200000

A negative growth rate means that the population is decreasing rather than increasing. The stated population is 50 million and the magnitude of the rate is 0.4 percent. To find the number of people lost in one year, convert 0.4 percent to the decimal 0.004 and multiply it by the starting population. The negative sign indicates direction, while the calculated positive number gives the size of the decrease.

Decrease = 50,000,000 × 0.004 = 200,000 people. This is 2 lakh, so option B is correct. After one year, the approximate population would be 49.8 million if the rate remained unchanged. The answer 1 lakh would represent only 0.2 percent of the population, and 4 lakh would represent 0.8 percent, so neither matches the stated rate.

Related tags

Negative GrowthPopulation DecreasePercentage CalculationTotal Population ChangePopulation GrowthThe World Population – DistributionDensity And GrowthThe World Population Distribution Density And Growth

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