Answer:
The total number of sandwiches sold that day was 90.
Explanation:
Given that the 36 cheese sandwiches sold represent 40% of the total sandwiches sold on that day, to obtain the total number of sandwiches sold the following calculation must be made:
40 = 36
100 = X
((100 x 36) / 40) = X
3600/40 = X
90 = X
Therefore, the total number of sandwiches sold that day was 90.