Write the ratio 42:30 42 : 30\,42:30 in its simplest form
17\displaystyle \frac{1}{7}71 of people in a class are left handed.
Write the ratio of left handed people to right handed people
249 exam-style questions on OCR GCSE Maths Writing and Simplifying Ratio. Each one has a worked solution and a mark scheme showing where the marks go.