The weight of a piece of wire (w w\,w grams) is directly proportional to its length (l l\,l cm).
w w\,w is given by the formula: w=30lw = 30lw=30l
Find the length of a wire weighing 75 grams.
Practise Oxford AQA IGCSE Maths Direct and Inverse Proportion with exam-style questions for Core and Extended tier. 22 questions, matched to the Oxford AQA IGCSE Maths (9260) specification and written in Paper 1 and Paper 2 (Core: 1C and 2C; Extension: 1E and 2E) style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.