Sarah has four times as many books as Ben. Sarah has 12 more books than Chloe. The total number of books they have is 150.
Find the ratio of the number of Ben's books to Sarah's books to Chloe's books.
71 exam-style questions on Edexcel GCSE Maths Forming and Solving Equations. Each one has a worked solution and a mark scheme showing where the marks go.