250 people go to a cinema. Every person buys either popcorn or nachos.
62% of the people buy popcorn. 54% of the people are adults. 18% of the people are adults who buy nachos.
Work out how many children buy popcorn.
38 exam-style questions on Edexcel GCSE Maths Two Way Tables. Each one has a worked solution and a mark scheme showing where the marks go.