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.
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.