DSSSB · Mathematics
A train goes from A to B at a speed of 18 km/h and returns from B to A by the same route at 90 km/h. The average speed (in km/h) of the train during the two-way journey is:
- 32
- 33
- 30
- 29
A train goes from A to B at a speed of 18 km/h and returns from B to A by the same route at 90 km/h. The average speed (in km/h) of the train during the two-way journey is:
- 32
- 33
- 30
- 29
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