In a cinema the ratio of adults to children is 7:3 The children are all either boys or girls. The ratio of boys to girls is 5:4
What fraction of all the people in the cinema are girls?
Give your answer as a fraction in its simplest form.
222 exam-style questions on Eduqas 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.