White paint and blue paint are mixed in the ratio 3:83:83:8. A painter uses 40 litres of blue paint.
Work out how many litres of white paint are used.
Practise OCR GCSE Maths Ratio with exam-style questions for Foundation and Higher tier. 93 questions, matched to the OCR GCSE Maths (J560) specification and written in the written papers 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.