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?
Practise Edexcel GCSE Maths Writing a Ratio as a Fraction or Linear Function with exam-style questions for Foundation and Higher tier. 60 questions, matched to the Edexcel GCSE Maths (1MA1) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.