Final answer:
To find the average speed in miles per minute, convert the distance covered by the fish from meters to miles. Then, calculate the time taken for 1 lap. Finally, divide the distance covered by the time taken to find the average speed of the fish.
Step-by-step explanation:
To find the average speed in miles per minute, we need to first convert the distance covered by the fish from meters to miles. Since 1 mile is equal to 1609.34 meters, we can calculate the distance covered by the fish by dividing the perimeter of the pond by this conversion factor. Therefore, the distance covered by the fish is 0.447 miles (720 m / 1609.34).
Next, we need to calculate the time taken by the fish to swim 10 laps in minutes. Since the fish took 120 minutes to swim 10 laps, we can calculate the time taken for 1 lap by dividing 120 minutes by 10. Therefore, the time taken for 1 lap is 12 minutes.
Finally, we can calculate the average speed by dividing the distance covered (in miles) by the time taken (in minutes). Therefore, the average speed of the fish is 0.03725 miles per minute (0.447 miles / 12 minutes), which is approximately equal to 0.6 miles per minute.