As given by the question
There are given that the $2c-$25=$69.
Now,

Hence, the correct answer is C.
Do you still need the answer, because im working on the same question..
The answer is
To find how many ounces you need to make, you multiply the number of packs by how many ounces.
So, it would look like:
36*2.35=84.6
15*10.8=162
Then you add the ounces together and you have your answer:
162+84.6=246.6 ounces