Sarah has 320 marbles. The marbles are either red, blue, green or white.
25% of the marbles are red.
38\displaystyle \frac{3}{8}83 of the marbles are blue.
The ratio of green marbles to white marbles is 3:23:23:2.
Work out the number of green marbles Sarah has.
Practise Eduqas GCSE Maths Ratio with exam-style questions for Foundation and Higher tier. 93 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.