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Consulting Case Interview Practice Questions

Category - Facts to Know

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Which best approximates the age structure of the United States?
  1. 0-19: 27%, 20-64: 60%, 65 and over: 13%
  2. 0-19: 12%, 20-64: 70%, 65 and over: 18%
  3. 0-19: 25%, 20-64: 50%, 65 and over: 25%
  4. 0-19: 15%, 20-64: 65%, 65 and over: 20%
  5. 0-19: 17%, 20-64: 60%, 65 and over: 23%
Explanation
Answer: As of 2007, the US demographic structure looked like this:

27% - 0 to 19 (about 82 million people)
60% - 20 to 64(about 180 million people)
13% - 65 and over (about 40 million people)

Key Takeaway: You will almost certainly encounter questions that will require you to segment out by age group. Knowing this breakdown is massively helpful. You can always break down within the group on the fly (just split the 20 to 64 group as finely as you need to).
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