At a local community fair, the ratio of volunteers to visitors is 1:81:81:8. All of the visitors are either adults or children. The ratio of adults to children is 5:35:35:3.
What fraction of all the people at the fair are children?
60 exam-style questions on Edexcel GCSE Maths Writing a Ratio as a Fraction or Linear Function. Each one has a worked solution and a mark scheme showing where the marks go.