A car makes a trip of 400 km in 4 hours The return trip takes 3 1 2 hours What can you infer about the average speed of the car on two trips?

If a car makes a trip of 400 km in 4 hours and the return trip takes 3 1/2 hours, I can infer that the car was traveling at a speed on 100km per hour on the first trip and 114 km per hour on the return trip.