A train travels at `60 km//h` for `0.50 h` , at `30 km//h` for the next `0.24 h` and at `70 km//h` for the next `0.71 h`. What is the average speed of the train ?

A train travels at a speed of 60 km/h for 0.52 h, at 30 km/h for the next 0.24 h and then at 70 km/h for the next 0.71 h. What is the average speed of the train ?

A train travels at a speed of 60 km/h for 0.52 h, at 30 km/h for the next 0.24 h and then at 70 km/h for the next 0.71 h. What is the average speed of the train ?

A train travels 600 km in 5 hours and the next 900 km in 10 hours. What is the average speed of the train?

A man walks at a speed of 6 km h^-1 for 1 km and 8 km h^-1 for the next 1 km.What is the average speed for the walk fo 2 km?

A train has a speed of 60 km//h for the first one hour and 40 k/h for the next half hour. Its average speed in km//h is

A man travels the first part of his journey at 20 km/h and the next at 70 km/h, covering the entire journey at an average speed of 50 km/h. What is the ratio of the distance that he covered at 20 km/h to that he covered at 70 km/h?