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Lets suppose common in both

x+y=48

And legs are

4x+2**y**=140**Hens have 2 legs** so we will find value of y

4(48-y)+2y=140 :get value of x from x+y=48

192-4y+2y=140

-4y+2y=140-192

-2y=-52

y=26

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# A man has some hens and cows. if the number of heads be 48 and the number of feet equals 140, then the number of hens will be:

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- 26

x+y=48

And legs are

4x+2**y**=140**Hens have 2 legs** so we will find value of y

4(48-y)+2y=140 :get value of x from x+y=48

192-4y+2y=140

-4y+2y=140-192

-2y=-52

y=26

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