Question

A study of fish is being conducted in a pond. They marked 30 fish and released them. The next day, they counted 75 fish, 25 of them which had been marked. Find the best estimate of fish population in he pond.

Answer 1

We estimate that 25/75 = 1/3 of the fish in the pond are marked.

So an estimate would be 30 / 1/3 = 30*3

= 90 answer