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52 legs, there are 16 animals, how many chickens and pigs are there

  • math - ,

    You can solve this with algebra. The following solution can be done mentally by a 5th grade student.

    Start with 16 pigs, that gives 64 lesg.
    Each pig changed for a chicken reduces 2 legs, and we need to reduce 64-52=12 legs.
    So change 6 pigs for chickens to get 10 pigs and 6 chickens.

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