A person on a road trip drives a car at different constant speeds over several legs of the trip. She drives for 40.0 min at 75.0 km/h, 17.0 min at 80.0 km/h, and 60.0 min at 60.0 km/h and spends 25.0 min eating lunch and buying gas. (a) What is the total distance traveled over the entire trip (in km)? km (b) What is the average speed for the entire trip (in km/h)? km/h