Answer:
Size of each group = [tex]\frac{x}{3}[/tex]
Step-by-step explanation:
Total number of paint brushes = x
Since each the three groups are equally sized, to get the number of paintbrushes in a group, we will have to divide the total number of paint brushes by 3
∴ We have, number of paint brushes in a group = [tex]\frac{Total number of paintbrushes}{3}\\[/tex]
= [tex]\frac{x}{3}[/tex]
this is also the same thing as saying [tex]\frac{1}{3}[/tex]×[tex]\frac{x}{1}[/tex]
This shows that the size of the new group is the same as [tex]\frac{1}{3}[/tex] the size of the original group