Here is a list of ingredients for making 10 small cakes.
160 g of margarine
150 g of sugar
220 g of flour
1 teaspoon baking powder
3 eggs
Ben is going to make 20 of the small cakes. Work out how much margarine he needs.
Aisha is going to make 15 of the small cakes. Work out how much flour she needs.
115 exam-style questions on Eduqas GCSE Maths Proportion. Each one has a worked solution and a mark scheme showing where the marks go.