Yol drove 390.25 miles back home to surprise his brother for his birthday. The drive took 7 hours. What was Yol's average speed for the trip, in miles per hour?

55.75 miles/hour is the average speed

Step-by-step explanation:

In this question, we are asked to calculate the average speed attained by Yol if he traveled a certain distance within a given time frame.

To calculate his average speed, what we do is to divide the distance travelled by Yol by the number of hours he traveled.

mathematically what we are saying is that

Average speed = Total distance / Total time

From the question, the distance is 390.25 miles while the time is 7 hours

we now input these values

Average speed = 390.25/7 = 55.75 miles per hour is the average speed