A shop sells washing powder in 650g packs.
Jacob has no washing powder. He estimates that he does 2 washes a week, using 40g each wash.
Jacob wants to buy enough washing powder for 13 weeks.
How much washing powder does Jacob need for 13 weeks?
Hence, how many packs of washing powder does Jacob need to buy?
218 exam-style questions on OCR GCSE Maths Calculation Problems. Each one has a worked solution and a mark scheme showing where the marks go.