The volume of paint (V V\,V litres) needed for a wall is directly proportional to the area (A A\,A m2^22) of the wall.
V V\,V is given by the formula: V=0.25AV = 0.25AV=0.25A
Find the area of a wall that requires 14 litres of paint.
50 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.