A factory packs light bulbs into small boxes and large boxes. There are 6 light bulbs in a small box. There are 15 light bulbs in a large box. The factory has x x\,x small boxes and y y\,y large boxes of light bulbs.
Write an expression for the total number of boxes of light bulbs the factory has.
Write an expression for the total number of light bulbs the factory has.
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.