carlsone0738 carlsone0738 03-02-2022 Mathematics contestada A train traveled 300 km in 5 hours and then increased in speed, traveling the final 100 km in 1.5 hours. What was the train's average speed in km/h?(A. 66.7 km/h)(B. 60 km/h)(C. 61.5 km/h)(D. 54 km/h)