19.37 kmph is the ‘average speed’ of the train.
To find the average speed of the train we know that the average speed is ratio of total distance traveled to the total time taken. From the given question, The total distance traveled by the train is 74 + 81 = 155 kilometers and the total time taken to travel the distance is 3 + 5 = 8 hours. substitute the values accordingly.
Thus, the average speed of the train is 19.37 kmph.
the answer would be c