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Math help plz

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To determine the number of fish in a lake , a conservationist catches 500 fish, tags them, and releases them into the lake. Later, 120 fish are caught and 25 of them are tagged. Estimate the number of fish in the lake.

  • Math help plz - ,

    since 25 is 21% of 120, then assuming that the 500 tagged fish have dispersed evenly into the fish population, 500 is 21% of the whole population.

    So, 500/.21 = 2400 is a good estimate of the whole population

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