There is a farmer having some cows and hens the total number of heads of them is 48 and total feets are 140 so tell me how many cows and how many hens are there???
please answer step wise!
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There is a farmer having some cows and hens the total number of heads of them is 48 and total feets are 140 so tell me how many cows and how many hens are there???
please answer step wise!
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Answer:
Let the number of hen be x and number of cow be y
from question
x+y=48 ------------1
Again from question
2x+4y=140 ---------2 (since hen has 2 feet and cows have 4 feet)
On multiplying equation 1 by 2
2x+2y=96 -----------3
On subtracting eqn 3 from eqn 2,we get
2x+4y =140
2x+2y =96
- - -
-----------------
2y = 44
y = 44/2
= 22
On putting y=22 in eqn 1
x+22 = 48
x = 48-22
= 26
Hence no. of hens =26
and number of cows =22