3QUESTION 3 OF 3
Answer & explanation
The official answer, with Fermi’s reasoning step by step.
Answer & explanation
Official answer
925
hours
How to estimate it
Fermi’s official “Napkin math”
The US is roughly 3,000 miles coast to coast, and the drive lands around 2,800. How fast do you walk? Maybe 3 miles an hour.
- NYC to LA distance
- ~2,800 mi
- Walking pace
- ÷ 3 mph
- 2,800 ÷ 3
- ≈ 930 hours
The US is roughly 4,500 kilometers coast to coast by road. How fast do you walk? Maybe 5 kilometers an hour.
- NYC to LA distance
- ~4,500 km
- Walking pace
- ÷ 5 km/h
- 4,500 ÷ 5
- ≈ 900 hours
Rounded assumptions may give a slightly different estimate. The official answer above is the game’s reference value.
Source calculation & reference
- Driving distance NYC → LA
- ≈ 2,790 mi
- Walking pace
- ÷ 3 mph
- 2,790 ÷ 3
- ≈ 925 hours (~39 days)
Reference cited by Fermi: Google Maps walking directions
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