Final answer:
To calculate Ashton's average rate, convert the given time of 12 minutes to hours by dividing by 60 to get 0.2 hours. Then, divide the distance of 3.25 miles by 0.2 hours to get an average speed of 16.25 miles per hour.
Step-by-step explanation:
To find Ashton's average rate in miles per hour, we need to convert the time from minutes to hours and then divide the distance by the time. Ashton rode his bicycle for 3.25 miles in 12 minutes. Since there are 60 minutes in an hour, the time in hours is 12 minutes divided by 60, which is 0.2 hours.
Next, we calculate the average speed by dividing the distance by the time:
Average speed = Distance ÷ Time
Average speed = 3.25 miles ÷ 0.2 hours
Average speed = 16.25 miles per hour
Therefore, Ashton's average rate was 16.25 miles per hour.