Carol sells tickets for an exhibition. During three days she sold tickets worth $960. One ticket costs $4. How many tickets on average did she sell during one of these three days?
Thoughts? Step-by-step reasoning:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
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Carol sold 960 / 4 = 240 tickets during three days. So in one day, she sold on average 240 / 3 = 80 tickets.
Thus, the answer is 80.