Question

4. The total Number of cows and hens in a certain farm house is 80. The total number of their legs is 270 then find the cows and hens in the farmhouse ans plz with statement
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Answer 1

Step-by-step explanation:

let the number of cows x

and number of hens y

then x+y=80

=> y=80-x

again,

each cow have 4 legs and each hen have 2 legs

so,

4x+2y=270

=> 2(2x+y)=270

=> 2x+y=270/2=135

=> y=135-2x

so,

135-2x=80-x

=> -x+2x=135-80

=> x=55

so,number of cow is 55

and number of hen =80-55=25