Answer :

RhysH
1 1/5 = 1.2
then divide by number of servings to get the amount for 1 serving
1.2/6 = 0.2
0.2 = 1/5
It takes 1/5 cups of juice for each serving
so 1 1/5 divided into six servings or 1 1/5  can be rewritten as 6/5 so divsion by six leaves you with 1/5 cup per serving