Sarah wants to find an estimate for the number of fish in a pond.
She catches 40 fish from the pond and marks each one with a tag.
She then returns the fish to the pond.
A week later, Sarah catches another 50 fish.
4 of these fish are marked with a tag.
Work out an estimate for the number of fish in the pond.
Write down an assumption you have made.
Practise AQA GCSE Maths Capture Recapture with exam-style questions for Foundation and Higher tier. 20 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.
