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A farmer counts 70 heads and 200 legs how many chickens and pigs does he have?
Wiki User
∙ 14y ago
Let c represent the number of chickens and p represent the number of pigs.
Since chickens and pigs have one head each, 70 heads = c + p.
Since chickens have 2 legs and pigs have 4 legs, 200 legs = 2c + 4p.
Subtracting twice the first equation (140 = 2c + 2p) from the second, we get
60 = 2p
or
p = 30 pigs
Rewriting the first equation as c = 70 - p, we get c = 40 chickens.
Wiki User
∙ 14y ago
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