Old McDonald had a farm and in this farm, he had 37 animals (chicken and pigs)

Question

Altogether, the animals had 98 legs. How many chickens and how many pigs are there?

Answer 1

Let's there are x-chickens and y pigs. Then

x+y=37

2x+4y=98

 

x+y=37

x+2y=49

 

x=25 (chickens)

y=12  (pigs)

 

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