Here is a list of ingredients for making 16 small cakes.
200 g of margarine
240 g of sugar
280 g of flour
2 teaspoons baking powder
4 eggs
Joe is going to make 32 of the small cakes. Work out how much margarine he needs.
Sharon is going to make 24 of the small cakes. Work out how much flour she needs.
115 exam-style questions on OCR GCSE Maths Proportion. Each one has a worked solution and a mark scheme showing where the marks go.