SAT Math Multiple Choice Question 869: Answer and Explanation

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Question: 869

Top Four East Coast Metro Areas for New Job Growth per Capita
Metro AMetro BMetro CMetro D
Total jobs added in metro area94,20086,35072,60066,000
New jobs per 1,000 residents245375250200

14. According to the information in the table, which of the following correctly ordersthe populations of the metro areas from greatest to least?

  • A. A, B, C, D
  • B. D, C, B, A
  • C. A, D, C, B
  • D. A, D, B, C

Correct Answer: C

Explanation:

C

Difficulty: Hard

Category: Problem Solving and Data Analysis / Statistics and Probability

Strategic Advice: This is a tricky question because the two numbers given for each metro area (total jobs added and jobs per 1,000 residents) can't be used alone to answer the question. Think conceptually before making calculations.

Getting to the Answer: The table shows the number of jobs added in total and the number added per 1,000 residents in each area. You need to set up and solve (using cross-multiplication) a proportion for each metro area that looks like. The total population is the unknown, so call it p.

Ordering the results from greatest to least gives A, D, C, B, which matches (C).

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