1. The problem statement, all variables and given/known data A car making a 200-km journey travels 50 km/h for the first 100 km. How fast must the car go in the second 100 km to average 60 km/h? 2. Relevant equations There is the average velocity equation, and also the average speed equation. (delta x)/(delta t) = average velocity average speed = total distance/total time 3. The attempt at a solution 50 = 100/t to get the time? Do I need to do that? Then should I do the same for the next one?