2QUESTION 2 OF 3
Answer & explanation
The official answer, with Fermi’s reasoning step by step.
Answer & explanation
Official answer
420,000,000
vehicles
How to estimate it
Fermi’s official “Napkin math”
Ford has been building cars since 1903, so call it 120 years. Averaged across the whole run, say three and a half million vehicles a year.
- Years since 1903
- ~120
- Vehicles per year (avg)
- ~3.5 million
- 120 × 3.5M
- ≈ 420 million
Rounded assumptions may give a slightly different estimate. The official answer above is the game’s reference value.
Source calculation & reference
- 350 millionth vehicle built
- Aug 2012
- Since then, ~4.5 M/year × 14 years
- + ~70 M
- Lifetime production
- ≈ 420 million
Reference cited by Fermi: Ford Motor Company
How close was your guess?
Your comparison will appear here.
Compare by ratio: divide the larger number by the smaller one. The closer to 1×, the better.