There are some cubes in a bag.
16\displaystyle \frac{1}{6}61 of the cubes are red.
The rest of the cubes are blue.
Verify that the ratio of the number of red cubes to the number of blue cubes is 1:51 : 51:5.
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.