All Fermi answers
Fermi #9 · Question 1

How many pineapples does it take to weigh 1 US ton (2,000 lbs / 907 kg)?

Explore the official answer and the simple reasoning behind this Fermi estimate.

1QUESTION 1 OF 3

Answer & explanation

The official answer, with Fermi’s reasoning step by step.

Answer & explanation

Official answer

500

pineapples

How to estimate it

Fermi’s official “Napkin math”

A US ton is 2,000 pounds, easy to remember. How much does one pineapple weigh? Feels like a bowling ball, maybe 4 pounds~. Divide the two.

1 US ton
2,000 lbs
One pineapple
≈ 4 lbs
2,000 ÷ 4
≈ 500

Rounded assumptions may give a slightly different estimate. The official answer above is the game’s reference value.

Source calculation & reference
1 US ton
2,000 lbs
Average whole pineapple (produce-industry range 2-6 lb by variety)
≈ 4 lbs
2,000 ÷ 4
500

Reference cited by Fermi: Blue Book Services produce industry pineapple variety guide

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.

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