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 About the author Hailey
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 Reply
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