Read the excerpt below from a regional environmental report.
A regional environmental report on waste management in the Greater Midlands area highlights the progress of sustainable waste initiatives. The study shows that the metropolitan area generates a substantial amount of waste annually. Specifically, the region sends 3.6 million tonnes of municipal solid waste directly to active landfill sites. In contrast, through comprehensive municipal schemes, 16.2 million tonnes of waste is successfully diverted to recycling and composting facilities. Furthermore, the region's energy-from-waste plants incinerate 4.5 million tonnes of non-recyclable material to generate electricity for the local grid.
Express the ratio of waste sent to landfill to waste successfully diverted to recycling in its simplest form.
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87 exam-style questions on OCR A GCSE Geography Numerical and statistical skills. Each one has a worked solution and a mark scheme showing where the marks go.