1. The problem statement, all variables and given/known data A person travels by car from one city to another with different constant speeds between pairs of cities. She drives for 15.0 min at 65.0 km/h, 20.0 min at 75.0 km/h and 60.0 min at 40.0 km/h, and spends 15.0 min eating lunch and buying gas. Determine the average speed for the trip. 2. Relevant equations Average Speed = total distance/total time 3. The attempt at a solution (65+75+80)/(15+20+60+15)=1.64 which isn't logical. I don't understand how to compute the total distance???