Answer:
The ratio is [tex]\frac{6}{6}[/tex] or [tex]\frac{1}{1}[/tex]
Step-by-step explanation:
Let
x -----> the number of girls who chose blue as their favorite
y ------> the number of girls who chose green as their favorite
z ------> the number of girls who chose pink as their favorite
w ------> the number of girls who chose red as their favorite
see the attached figure to better understand the problem
we have
x=4
y=2
z=5
w=1
we know that
The ratio of the number of girls who chose blue or green as their favorite to the number of girls who chose pink or red as their favorite is
[tex]\frac{x+y}{z+w}[/tex]
substitute the values
[tex]\frac{4+2}{5+1}[/tex]
[tex]\frac{6}{6}[/tex]
Simplify
[tex]\frac{1}{1}[/tex]
