DSSSB · Mathematics
A person is to reach a destination 50 km away. If he covers the first 35 km in 4 hours, then at what constant speed should he go so that the average speed for the whole journey becomes 10 km/hr?
- 12 km/hr
- 21 km/hr
- 15 km/hr
- 18 km/hr
A person is to reach a destination 50 km away. If he covers the first 35 km in 4 hours, then at what constant speed should he go so that the average speed for the whole journey becomes 10 km/hr?
- 12 km/hr
- 21 km/hr
- 15 km/hr
- 18 km/hr
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