The idea is to divide the distance by the time. Since presumably you want the answer in miles/hour, you should first convert the minutes to hours.
Chat with our AI personalities
If you run 2.5 miles in 20 minutes your average speed is 7.5 miles per hour.
If you could drive 184 miles in 15 minutes, multiply 184 by 4 (15 minutes is one-quarter of an hour) to get your MPH. In those 15 minutes, your average speed was 736 MPH.
It takes approximately 6.11 hours (6 hours 7 minutes) to drive 428 miles at an average speed of 70 mph.
Traveling 117 miles in 2 hours and 15 minutes means the average speed is 52 miles per hour. (Divide 117 by 2.25)
Average speed = Distance/Time = 2.5 miles/15 minutes = 10 miles per hour