Answer: 12%
Explanation:
Since we are given the information that at a school carnival, that 3 out of 25 tickets sold were early-admission tickets, to calculate the percentage of the tickets that were early-admission tickets goes thus:
= Number of early admission tickets / Total number of tickets × 100
= 3/25 × 100
= 12%
Therefore, the percentage of the tickets were early-admission tickets is 12%.