Brain Teasers & Mental Math
Estimate the annual US market for movie theater tickets (box office revenue).
Model answer
Bottom-up. ~330M people; assume average ~3 theater visits/person/year (many go 0, frequent moviegoers pull up the average) → ~1B tickets/year. Average ticket ~$10-11 → ~1B × $10.5 ≈ ~$10-11B. Sanity…
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