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Writing a Ratio as a Fraction or Linear Function

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Question 9

In a manufacturing plant, the ratio of machines to hand tools is 4:1 4:1\,4:1 The machines are all either operational or faulty. The ratio of operational machines to faulty machines is 9:19:19:1

What fraction of all the equipment in the plant are faulty machines?

[3]

Writing a Ratio as a Fraction or Linear Function Questions

  1. GCSE
  2. /Maths
  3. /Writing a Ratio as a Fraction or Linear Function