Answer: 24%
Explanation:
for these problems you can use this equation:
where x=given quantity, n=total amount, and p is your answer.
for this problem x=18 (regular sodas)
we add the amount of regular and diet sodas to get n=75 (18+57)
when we plug it in we have
which gives us our answer, p, 24%
hope this helped ♡