Pleaseeee help I'll see if I could give you Brainliest

2/3 cups

Step-by-step explanation:

if we put all ingredients toghether will have

1/4+2/3+1 and 1/3=1/4+1 and 2/3+1/3=1/4+ 2= 2cups and 1/4 or 2.25 cups

So 2.25 cups is 1 batch of dressing

          6 cups is x batches of dressing

cross multiply x=6*1/2.25= 6/2.25

so insted of 1/4 vineger will need (1/4)(6/2.25)=6/9=2/3 cups of vinegar