240 grams of flour are needed to make 8 cakes.
Marian wants to make 18 of these cakes.
She has 510 grams of flour.
Does Marian have enough flour to make 18 cakes? You must show all your working.
Hence, work out the greatest number of these cakes Marian can make with the flour she has.
115 exam-style questions on OCR GCSE Maths Proportion. Each one has a worked solution and a mark scheme showing where the marks go.