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If a country's population increases by 45 percent over fifteen years, which conclusion is definitely correct?

Answer and explanation

Correct answer: Final population is 145 percent of initial population

A 45% increase over fifteen years means the final population is the original population plus 45% of it. Therefore the final population equals 145% of the initial population, or 1.45 times the initial value. Option B is definitely correct. The statement gives a total change, not the pattern of change during each individual year.

The population may have grown at different rates in different years, so an exact annual increase of 3% cannot be inferred. Also, the total change could result from births, deaths, and migration together; it does not establish a particular birth rate or zero migration. Thus options A, C, and D make claims unsupported by the information. Only option B follows directly from the percentage definition.

Related tags

Total Percentage GrowthFinal PopulationAnnual Growth InterpretationCompound GrowthPopulation GrowthThe World Population – DistributionDensity And GrowthThe World Population Distribution Density And Growth

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