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12 July, 11:45

Alberto puts 3 kinds of fish in his fish tank: zebra danios, fancy guppies, and cat fish. Half of Alberto's fish are zebra danios. He has 2 times as many catfish as he has fancy guppies.

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  1. 12 July, 11:58
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    Missing info:

    Alberto's friend Jackson says 1/3 of Alberto's fish are catfish. Is Jackson correct?

    Given:

    zebra danios

    catfish

    fancy guppies

    zebra danios is 1/2 of the total number of fish

    2 times as many catfish as fancy guppies

    x = guppies

    2x = catfish

    x + 2x = 1/2 of the fish population

    3x = 1/2 of the fish population

    3x * 2 = 6x

    x = 1/6 number of fancy guppies

    catfish:

    2x = 2 (1/6) = 2/6 = 1/3 catfish.

    Jackson is correct. Catfish is 1/3 of the total fish population.
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