Anya wants to estimate the number of beetles in a woodland area.
She catches a sample of 25 beetles, marks them and releases them back into the woodland.
The next week, she takes a second sample of 40 beetles.
5 of these beetles have been marked.
Work out an estimate for the number of beetles in the woodland.
Write down an assumption you have made.
Practise Edexcel GCSE Maths Capture Recapture with exam-style questions for Foundation and Higher tier. 20 questions, matched to the Edexcel GCSE Maths (1MA1) 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.