Step-by-step explanation:
It is possible, depending on the conditions in which you are accounting for the number of tickets sold.
1. Suppose you are calculating the number of adult tickets sold, by accounting for the number of people who are adults that were issued a ticket, this cannot be negative, the lowest you could have is zero.
2. If you are calculating, using the amount of profit you made, this could be negative.
But in all, it is the interpretation that matters, -6 adult tickets could mean you lost 6 adult tickets.
