A train travels the first 100 km at 50 km/h and the next 100 km at 25 km/h. What is the average speed for the total journey?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 33.33 km/h.
Time for first 100 km = 100/50 = 2 hours
Time for next 100 km = 100/25 = 4 hours
Total distance = 100 + 100 = 200 km
Total time = 2 + 4 = 6 hours
Average speed = 200/6 = 33.33 km/h