## 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:

- 22
- 23
- 24
- 26

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