Nails are sold in packets of size X and size Y. There are 250 nails in a size X packet. There are 500 nails in a size Y packet. A builder buys p p\,p packets of size X and q q\,q packets of size Y.
Write an expression for the total number of nails the builder buys.
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.