Answer : Monique has 5 art brushes and Chelsea has 55 art brushes.
Explanation:
Let number of art brushes Monique has = x
Let number of art brushes Chelsea has = 11x
According to question ,
⇒ 11x+x= 60
⇒ 12x=60
⇒ x= [tex]\frac{60}{12}[/tex]
So, the number of art brushes monique has 5
and the number of art brushes Chelsea has = 11× 5= 55
