The number of goats the children can have is 5.
The number of chickens the children can have is 20.
c + g = 20 equation 1
c = 4g equation 2
Where:
c = number of chickens
g = number of goats
In order to determine the required value, substitute for c in equation 1
4g + g = 20
Add similar terms
5g = 20
Divide both sides by 5
g = 5
Substitute for g in equation 2
c = 4 x 5
c = 20
To learn more about simultaneous equations, please check: https://brainly.com/question/25875552