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Question 5

A factory has three machines that produce bolts. Machine A produces 25% of the bolts, machine B produces 40% of the bolts and machine C produces the rest of the bolts.

4.2% of the bolts produced are faulty.

Of the bolts produced by machine A, 2.8% are faulty and of the bolts produced by machine B, 5.5% are faulty.

Find the percentage of bolts produced by machine C that are faulty.

[3]
Markscheme

Probability Questions

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

34 exam-style questions on Edexcel AS 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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