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.
Give your answer in the form 1:n1 : n1:n
Practise Edexcel IGCSE Maths Writing and Simplifying Ratio with exam-style questions for IGCSE Maths. 15 questions, matched to the Edexcel IGCSE Maths (4MA1) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.