42.375 km/h; To get the answer we just need to find the rate of km/h for both instances, add them, and divide it by 2. 95/4 = 23.75 km/h. The second instance is already in km/h, 61 km/h. Add 23.75 and 61 (84.75) and just divide by 2 to find the average speed. 84.75/2 (42.375). The average speed is 42.375 km/h