Final answer:
The average number of fish caught in 15 minutes can be found using proportions, and it is 2 fish.
Step-by-step explanation:
The average number of fish caught in an hour is eight. To find the average number of fish caught in 15 minutes, we can use the concept of proportions. Since there are 60 minutes in an hour, we can set up the proportion: 8 fish / 60 minutes = x fish / 15 minutes. Solving for x, we find that the average number of fish caught in 15 minutes is 2 fish.
\