How much domestic waste does the UK produce in a year?

The UK has a green wheelie bin used to pick up garbage.

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Solution

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A typical bin bag weighs about 3 kg. It is reasonable to assume that there are 6 or 7 garbage bags in the bin.

Or, 20 kg per week.

There are 66 million people in the country.

Let's say 22 million households with a wheelie bin have their garbage collected each week, and about 50 weeks in a year.

Therefore a guesstimate can be

2 * 10^1 kg / week * 2 * 10^7 * 5 * 10^1 week/year

Or, 2 * 10^10 kg/year

The official figure stands at about 3.1 × 10^10 kg/year