How much CO2 can you reduce by taking trains instead of flying?

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


11/122 = about 1/10

Source: Train versus planes  [].