A visitor to a library is selected at random. The probability that the visitor borrows a fiction book is 0.5. Of the visitors who borrow fiction, 60% use a self-service machine.
Find the probability that the selected visitor borrows fiction but does not use a self-service machine.
200 exam-style questions on OCR A Level Maths 2.3 Probability, covering 2.3.1 Mutually exclusive and independent events, 2.3.2 Diagrams to assist probability calculations, 2.3.3 Conditional probability (A-level only), 2.3.4 Conditional probability from first principles (A-level only), and 2.3.5 Modelling with probability. Each one has a worked solution and a mark scheme showing where the marks go.