1. Formula for speed is: Speed = Distance/Time
2. Distance is given = 120 miles
3. Calculate time of travel (10:32 - 10:20)
4. Divide that into distance
5. This gives you miles/minute
6. There are 60 minutes in an hour, so multiply last answer by 60 to convert ot miles per hour
2. Distance is given = 120 miles
3. Calculate time of travel (10:32 - 10:20)
4. Divide that into distance
5. This gives you miles/minute
6. There are 60 minutes in an hour, so multiply last answer by 60 to convert ot miles per hour