Average speed in this situation is distance/time so we can say the average speed was 1425km/12.5hrs=114km/hr then to convert to mph take 114km/hr * 1000m/1km*1mile/1609m = 70.9mph
Hope this answer helped you understand the concept and how to solve and convert units! Any questions please feel free to ask! If my answer helped you please rate brainliest!!! Thank you so much!!
