Question

Trout are bred in a tank as fish for restaurants
Twenty trout are caught and each is tagged through the tail then released back in the tank
A week later,30 trout are caught and it is found that two of them have a tail tag
Based on this evidence alone,what estimate can be made about no. of trout in the tank
100 300 600 1200

Answer 1

20 trout are tagged from of the tank containing an unknown number of trout.

30 trout are captured from the tank. Two of these 30 are tagged.

2 is to 30 as 20 is to T where T is the estimated number of fish in the tank.

Answer 2

2/30 = 20/T

1/15 = 20/ T

Your task: Solve the above equation for T.

Answer 3

T = ?

Answer 4

300

Answer 5

That's what I got.

Answer 6

thanks!

Answer 7

Glad to help.