There are 400 batteries in a box. 400 batteries weigh 12kg.
Work out the weight of 40 batteries.
Practise AQA GCSE Maths Direct and Inverse Proportion with exam-style questions for Foundation and Higher tier. 96 questions, matched to the AQA GCSE Maths (8300) specification and written in Paper 1, Paper 2 and Paper 3 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.