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A farmer has some hens and cows the total number of feet us 128 if the total number of of animals are 40 find how many hens and cows are there?

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2 answers
  1. 2H+4C=128
    H+C=40

    double the lower equation, then subtract the second equation from the first.

    (2-2)H+4C-2C=128-80
    2C=48
    C=24
    H=16

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  2. suppose there were
    40 cows = 160 feet

    so, you would need 32/2 = 16 fewer cows: 24. The 32 feet would be made up with 16 hens.

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