Answer:
42.
Step-by-step explanation:
First, there must be more twix bars than kit kats, so that means the amount of twix bars is over 40. So test 42 and 44.
If there are 42 twix bars, then there are 42 - 4 = 38 kit kats in there.
42 + 38 = 80 (total), so 42 is the correct answer.
