Two local libraries, the North Library and the South Library, organized a joint reading event.
10% of the attendees were staff members, the rest were visitors. 52% of the attendees were from the North Library. 43% of the attendees were visitors from the South Library.
One of the attendees is selected at random. Find the probability that they are a staff member from the North Library.
Practise Edexcel GCSE Maths Two Way Tables with exam-style questions for Foundation and Higher tier. 40 questions, matched to the Edexcel GCSE Maths (1MA1) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.