DSSSB · Mathematics
A train travels 90 kilometres at a speed of 45 km/hr and another 90 kilometres at a speed of 75 km/hr. The average speed of the train for the entire journey is:
- 56.25 km/hr
- 56 km/hr
- 66 km/hr
- 66.25 km/hr
A train travels 90 kilometres at a speed of 45 km/hr and another 90 kilometres at a speed of 75 km/hr. The average speed of the train for the entire journey is:
- 56.25 km/hr
- 56 km/hr
- 66 km/hr
- 66.25 km/hr
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