PQR PQR\,PQR is a straight road.
The length of QR QR\,QR is four times the length of PQPQPQ.
PR=150PR = 150PR=150 metres.
Work out the length of QRQRQR.
93 exam-style questions on OCR GCSE Maths Ratio. Each one has a worked solution and a mark scheme showing where the marks go.