Tea bags are sold in small boxes and large boxes. There are 100 tea bags in a small box. There are 240 tea bags in a large box. Mae buys x x\,x small boxes and y y\,y large boxes of tea bags.
Write an expression for the total number of tea bags Mae buys.
64 exam-style questions on WJEC GCSE Maths Writing an Expression. Each one has a worked solution and a mark scheme showing where the marks go.