Make k k\,k the subject of the formula C=P+12kt2\displaystyle C = P + \frac{1}{2}kt^2C=P+21kt2
Practise OCR GCSE Maths Rearranging Harder Formulae 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.