Solve the problem.
-To determine the number of fish in a lake, a park ranger catches 280 fish, tags them, and returns them to the lake. Later, 108 fish are caught, and it is found that 30 of them are tagged. Estimate the number of fish in the
Lake.
A)78
B)12
C)907,200
D)1008

Question

Quizplus · Accepted Answer

The number of fish in the lake can be estimated using the ratio of tagged to untagged fish in the second catch. If 30 out of 108 fish are tagged, and these 30 represent the 280 tagged fish released earlier, the ratio of tagged to total fish in the lake can be set up as 280/x = 30/108, where x is the total number of fish in the lake. Solving for x gives x = (280*108)/30 = 1008.

Solve the Problem. -To Determine the Number of Fish in a Lake, a a Lake