Leo wants to estimate the number of fish in a small lake.
He catches a sample of 40 fish from the lake. He marks each fish with a tag and releases them back into the lake.
The next day, Leo catches another sample of 50 fish from the lake. He finds that 5 of these fish have tags.
Work out an estimate for the total number of fish in the lake.
Write down any assumptions you have made.
Practise OCR GCSE Maths Capture Recapture with exam-style questions for Foundation and Higher tier. 20 questions, matched to the OCR GCSE Maths (J560) specification and written in the written papers 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.
