Final answer:
The percent of people visiting a zoo or an aquarium that are pet owners is 72%.
Step-by-step explanation:
To find the percent of people visiting a zoo or an aquarium that are pet owners, we can use the formula:
(Number of pet owners / Total number of visitors) x 100
According to the Association of Zoo and Aquarium, 18/25 of people visiting a zoo or an aquarium are pet owners. So the number of pet owners is 18 and the total number of visitors is 25. Substituting these values into the formula:
(18 / 25) x 100 = 72%
Therefore, 72% of people visiting a zoo or an aquarium are pet owners.