Factful math: Grade 4th-6th

Math skills: Division / fraction

Related Environmental issues: Climate change

Flying from London to Paris emits 122 kg Co2 per passenger.

Taking a train from London to Paris emits 11 kg CO₂ per passenger. About how many times more CO₂ does the train emit than the flight per passenger?

1. 1/10 times
2. 10 times
3. 100 times

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ANSWER  1

11/122 = about 1/10

Source: Train versus planes  [https://www.seat61.com/CO2flights.htm].