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?
Practise OCR GCSE Maths Writing a Ratio as a Fraction or Linear Function with exam-style questions for Foundation and Higher tier. 60 questions, matched to the OCR GCSE Maths (J560) specification and written in the written papers style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.