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.
Write the ratio of the number of red cubes to the number of blue cubes in the form 1:n1 : n1:n
249 exam-style questions on WJEC GCSE Maths Writing and Simplifying Ratio. Each one has a worked solution and a mark scheme showing where the marks go.