Lisa’s barn has 20 animals that have 62 legs in total. She only has cows and geese. How many cows and how many geese does she have?

Question

Lisa’s barn has 20 animals that have 62 legs in total. She only has cows and geese. How many cows and how many geese does she have?

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Arya 2 weeks 2021-09-13T11:26:37+00:00 1 Answer 0

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    2021-09-13T11:28:19+00:00

    Answer:

    9 geese

    11 cows

    Step-by-step explanation:

    Say x is cows, and y is geese.

    x + y = 20 animals

    x * 4 + y * 2 = 62

    x = 20 – y

    (20 – y) * 4 + y * 2 = 62

    80 – 4y + 2y = 62

    – 2y = -18

    y = 9 geese

    x = 20 – 9 = 11 cows

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