54 scoops of chocolate.
1) Gathering the data from the question
Monday = 100 scoops in total
Snack bar sells 3x chocolate
x strawberry
1.5x Vanilla ( 3 : 1.5 = 2)
How many chocolate scoops?
2) Setting the expression:
3x+x+1.5x=100
4x +1.5x=100
5.5x=100
x=18.1 approximately then x = 18
Answer
3x = Chocolate
3*18 = 54 chocolate scoops