Eli L.

asked • 01/07/23

please help me with my math homework

There is an animal farm where chickens and cows live. All together, there are 89 heads and 220 legs. How many chickens and cows are there on the farm?

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01/22/23

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Raymond B. answered • 01/07/23

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let x=number of chickens, y= number of cows

both chickens and cows have one head each

chickens have 2 legs and cows have 4 legs


x + y = 89 heads

2x +4y = 220 legs

divide by two

x + 2y = 110

x+ y = 89

subtract to get

2y-y = 110-89

y = 21 cows

x = 89-21 = 68 chickens

2(68)+4(21) = 136+84 = 220 legs

68 +21 = 89 heads


68 chickens and 21 cows on the farm

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