A box contains black pens and blue pens. The ratio of the number of black pens to the number of blue pens is 5:2.
What fraction of the pens in the box are black?
[2]
Markscheme
Writing a Ratio as a Fraction or Linear Function Questions
60 exam-style questions on AQA GCSE Maths Writing a Ratio as a Fraction or Linear Function. Each one has a worked solution and a mark scheme showing where the marks go.