Lucy is four times as old as Alex. Lucy is 8 years older than Megan. The ratio of Alex's age to Lucy's age to Megan's age is 3:12:103:12:103:12:10.
Find the sum of their ages.
139 exam-style questions on Eduqas GCSE Maths Forming and Solving Equations. Each one has a worked solution and a mark scheme showing where the marks go.