Question the-po
The population of Greenville increased by from to . If the population is times the population, what is the value of ?
The population of Greenville increased by 7 % from 2015 to 2016 . If the 2016
Hard-difficulty · SAT Math · Percentages — Percent increase/decrease. Read the question above, select your answer, and check the full explanation below to understand exactly why the correct choice works.
Answer explanation
Choice C is correct. Let be the 2015 population of Greenville. It's given that the population increased by from 2015 to 2016. The increase in population can be written as . The 2016 population of Greenville is given as the sum of the 2015 population of Greenville and the increase in population from 2015 to 2016. This can be rewritten as , or . Therefore, the value of is .
Choice A is incorrect. This is the percent, represented as a decimal, that the population increased from 2015 to 2016, not the value of .
Choice B is incorrect and may result from conceptual or calculation errors.
Choice D is incorrect. This is the value of if the population increased by , not , from 2015 to 2016.
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