LMN LMN\,LMN is a straight wooden plank.
The length of MN MN\,MN is five times the length of LMLMLM.
LN=72LN = 72LN=72 millimetres.
Work out the length of MNMNMN.
93 exam-style questions on OCR GCSE Maths Ratio. Each one has a worked solution and a mark scheme showing where the marks go.