Write the ratio 15:45 15 : 45\,15:45 in its simplest form.
In February, it rained on 27\displaystyle \frac{2}{7}72 of days
Write the ratio of the days it rained to the number of days it did not rain.
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.