Math

posted by Jack

There are 12 animals in a farm.some are cows the rest are chickens.there are 28 animals legs in all.how many cows are there? how many chickens are there ?

  1. Reiny

    cows --- x
    chickesn --- y

    x+y = 12 **
    4x + 2y = 28 or 2x + y = 14 ***

    subtract ** from ***
    x = 2
    then y = 10

    2 cows and 10 chicks

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