There are only blue pens, black pens and red pens in a box.
There are three times as many blue pens as red pens.
There are five times as many black pens as red pens.
Write down the ratio of blue pens to black pens to red pens.
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.