Write the ratio 21:49 21 : 49\,21:49 in its simplest form.
There are red shapes and blue shapes in a box, kk+3\displaystyle \frac{k}{k+3}k+3k of the shapes are red.
Write the ratio of red shapes to blue shapes.
249 exam-style questions on Eduqas GCSE Maths Writing and Simplifying Ratio. Each one has a worked solution and a mark scheme showing where the marks go.