Question

4. A train moves with a speed of 30 kmh in the first
15 minutes, with another speed of 40 kmh the
next 15 minutes, and then with a speed of 60 kmh
in the last 30 minutes. Calculate the average speed
of the train for this journey. (Ans. 47.5 kmh)​

Answer 1

Answer:

The average speed of the train is 47.5kmh

Answer 2

Answer:

The average speed=47.5km/hr