Use a proportion to solve the problem.To determine the number of fish in a lake, a park ranger catches 240 fish, tags them, and returns them to the lake. Later, 72 fish are caught, and it is found that 40 of them are tagged. Estimate the number of fish in the lake.
A. 432 fish
B. 691,200 fish
C. 133 fish
D. 12 fish
Answer: A
Mathematics
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