A person has certain number of cows and birds they have 172
eyes and 344 legs.how many cows and birds does he have?
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Answer Posted / sheeba
2a+2b=172-----------eqn(1)
4a+2b=344-----------eqn(2)
substitute both
we get a=86(a=cow)
and b=0(b=birds)
so 86 cows and 0 bird
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