A company has three machines that produce a component. Machine A produces 20% of the components, machine B produces 45% of the components and machine C produces the rest of the components.
Of the components produced by machine A, 1% are faulty, of the components produced by machine B, 3% are faulty and of the components produced by machine C, 7% are faulty.
Find the percentage of components produced that are faulty.
186 exam-style questions on Edexcel A Level Maths Probability, covering 5.1 Calculating Probabilities, 5.2 Venn Diagrams, 5.3 Mutually Exclusive and Independent Events, and 5.4 Tree Diagrams. Each one has a worked solution and a mark scheme showing where the marks go.