A chemical solution has a density of 0.85 grams per ml. Find the mass of 400 ml of the solution.
Practise OCR GCSE Maths Speed and Density with exam-style questions for Foundation and Higher tier. 52 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.