In a school recycling project, students collect different types of containers to earn credits:
A student collects L L\,L large boxes, M M\,M medium boxes and S S\,S small boxes.
Write an expression for the total number of credits the student earns.
Practise OCR GCSE Maths Writing an Expression with exam-style questions for Foundation and Higher tier. 64 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.