150 people at a gym use either the Treadmill, the Bike, or the Rower.
70 of the people are men and the rest are women. 20 men use the Bike. 35 men and 42 women use the Treadmill. A total of 38 people use the Rower.
Work out how many women use the Rower.
159 exam-style questions on AQA GCSE Maths Two Way Tables. Each one has a worked solution and a mark scheme showing where the marks go.