Data incomplete in question.
Question:
A store sold
cases of juice on Friday
cases of juice on Saturday. How many more cases of juice did the store sell on Friday than on Saturday?
Answer:
cases of juice sold on Friday than on Saturday.
Solution:
Let us first change mixed fraction into improper fraction.
Number of cases sold on Friday =

Number of cases sold on Saturday =

Difference between cases sold on Friday and on Saturday




Hence
cases of juice sold on Friday than on Saturday.