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Probability

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Question 67

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.

4% of the components produced are faulty.

Of the components produced by machine A, 3% are faulty and of the components produced by machine B, 5% are faulty.

a.

Find the percentage of components produced by machine C.

[1]
b.

Hence, find the percentage of components produced by machine C that are faulty.

[3]
Markscheme

Probability Questions

  1. A Level
  2. /Maths
  3. /Probability

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.

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