A builder is mixing mortar by combining cement (x x\,x kg) and sand (y y\,y kg) in the ratio 2:72:72:7.
a.[2]
Use this information to draw a graph showing the relationship between the amount of cement and the amount of sand used.
b.[2]
The builder decides to use 40 kg of sand. Use your graph to work out how much cement he should use.
Writing a Ratio as a Fraction or Linear Function Questions
Practise OCR 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 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.