There are some marbles in a jar.
18\displaystyle \frac{1}{8}81 of the marbles are green.
The rest of the marbles are yellow.
Write the ratio of the number of green marbles to the number of yellow marbles.
Give your answer in the form 1:n1 : n1:n
Practise Eduqas GCSE Maths Writing and Simplifying Ratio with exam-style questions for Foundation and Higher tier. 64 questions, matched to the Eduqas GCSE Maths (C300QS) specification and written in Component 1 and Component 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.