XYZ XYZ\,XYZ is a straight line.
The length of YZ YZ\,YZ is three times the length of XYXYXY.
YZ=45YZ = 45YZ=45 metres. Work out the length XZXZXZ.
93 exam-style questions on OCR GCSE Maths Ratio. Each one has a worked solution and a mark scheme showing where the marks go.