Aperson'scarbonfootprintisanindicatorofhowmanygreenhousegasestheiractivitiesproduce.Intheyear2000,theUK'sannualCO₂emissionwas565.72milliontonnes.By2020theUK'sannualCO2emissionwas326.34milliontonnes.Calculatethepercentagedecrease.Giveyouranswerto1decimalplace
Question
Aperson'scarbonfootprintisanindicatorofhowmanygreenhousegasestheiractivitiesproduce.Intheyear2000,theUK'sannualCO₂emissionwas565.72milliontonnes.By2020theUK'sannualCO2emissionwas326.34milliontonnes.Calculatethepercentagedecrease.Giveyouranswerto1decimalplace
Solution
To calculate the percentage decrease in the UK's annual CO2 emissions from 2000 to 2020, follow these steps:
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First, find the difference in emissions between the two years. Subtract the 2020 amount from the 2000 amount:
565.72 million tonnes - 326.34 million tonnes = 239.38 million tonnes
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Next, divide this difference by the original amount (the amount in 2000), then multiply by 100 to get the percentage:
(239.38 million tonnes / 565.72 million tonnes) x 100 = 42.3%
So, the percentage decrease in the UK's annual CO2 emissions from 2000 to 2020 was 42.3% to 1 decimal place.
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