d d\,d is inversely proportional to c c\,c
When d=25d = 25d=25, c=4c = 4c=4
Find the value of d d\,d when c=20c = 20c=20
43 exam-style questions on AQA GCSE Maths Direct and Inverse Proportion. Each one has a worked solution and a mark scheme showing where the marks go.