She will need 8 tables. Happy Thanksgiving! :D
You divide everything by 2.
Your answer is
Y=1/2 + 3/2
100%/x%=80/20
(100/x)*x=(80/20)*x - we multiply both sides of the equation by x
100=4*x - we divide both sides of the equation by (4) to get x
100/4=x
25=x
x=25
