1QUESTION 1 OF 3
Answer & explanation
The official answer, with Fermi’s reasoning step by step.
Answer & explanation
Official answer
100,000,000
cups
How to estimate it
Fermi’s official “Napkin math”
The easiest place to start is the UK population, about 67 million. Brits are famous tea drinkers. How many cups does the average person have a day? Call it 1.5 across everyone.
- UK population
- 67,000,000
- Cups per person per day
- ~1.5
- 67M × 1.5
- ≈ 100,000,000
Rounded assumptions may give a slightly different estimate. The official answer above is the game’s reference value.
Source calculation & reference
- UK population
- ~67 million
- Tea drinkers (~84% of adults)
- ~46 million
- Cups per drinker per day
- ~2
- UK Tea & Infusions Association
- ≈ 100 million
Reference cited by Fermi: UK Tea & Infusions Association
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.