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7 February, 09:20

An island has 12 fur seal rookeries to estemate the fur seal pup population in rookery A, 4727 fur seal pups were tagged in early august. In late august a sample of 600 pups were observed and 200 of these were found to have been previously tagged. Use a proportion to estimate the total number of fur seal pups in rookery A.

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  1. 7 February, 10:52
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    14,181

    Step-by-step explanation:

    Let the total population of seal pups = p

    Ratio of Tagged to Total seal pups observed is given as:

    200:600

    Population of Tagged to Total Population therefore is:

    4727: p

    Equating both ratios

    200:600=4727:p

    200/600=4727/p

    200 X p = 4727 X 600

    p = (4727 X 600) / 200

    p=14,181

    The total population of fur seals pups is 14,181
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