Final answer:
To find out how long it took Allie to ride her bike 5 miles at an average speed of 3.89 mph, divide the distance by the average speed and convert the result to minutes. It took Allie approximately 77.14 minutes to complete her ride.
Step-by-step explanation:
The question asks to calculate the time it took for Allie to ride her bike 5 miles at an average speed of 3.89 miles per hour (mph).
To calculate the time, we use the formula:
Time = Distance / Average Speed
Plugging in the values given:
Time = 5 miles / 3.89 mph
By performing the division, we get:
Time = 1.2856 hours (approximately)
To convert hours to minutes, we multiply by 60 since there are 60 minutes in an hour:
Time in minutes = 1.2856 hours * 60 minutes/hour
Time in minutes = 77.14 minutes (approximately)
Therefore, it took Allie about 77.14 minutes to ride her bike 5 miles.