x x\,x is inversely proportional to yyy.
x x\,x is given by the formula: x=840y\displaystyle x = \frac{840}{y}x=y840
Find the value of x x\,x when y=40y = 40y=40
189 exam-style questions on OCR GCSE Maths Direct and Inverse Proportion. Each one has a worked solution and a mark scheme showing where the marks go.