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 many packs of washing powder does Jacob need to buy?
14 exam-style questions on Oxford AQA IGCSE Maths Calculation Problems. Each one has a worked solution and a mark scheme showing where the marks go.