Write the ratio 3:7 3 : 7\,3:7 in the form 15:3515 : 3515:35.
There are red shapes and blue shapes in a box, the ratio of red shapes to blue shapes is 2:12 : 12:1.
Write the fraction of the shapes that are red.
249 exam-style questions on AQA GCSE Maths Writing and Simplifying Ratio. Each one has a worked solution and a mark scheme showing where the marks go.