x x\,x is inversely proportional to yyy.
x x\,x is given by the formula: x=1200y\displaystyle x = \frac{1200}{y}x=y1200
Find the value of y y\,y when x=25x = 25x=25
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.