liliaboop8883 liliaboop8883 26-04-2024 Physics Answered A train covers the first 5km of its journey at a speed of 30km/hrand the next 15km at a speed of 45km/hr. What is the average speed of the train?a. 35km/hrb. 39.5km/hrc. 37.5km/hrd. 40km/hr