x x\,x is directly proportional to the cube of y y\,y
When x=54x = 54x=54, y=0.3y = 0.3y=0.3
Find the value of y y\,y when x=432x = 432x=432
164 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.