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A man completes 30 km of a journey at the speed of 6 km/hr and the remaining 40 km of the journey in 5 hours. His average speed for the whole journey is
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- 7 km/hr
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6 4 km/hr 11 - 8 km/hr
- 7.5 km/hr
Correct Option: A
| Time taken to cover 30km at 6 kmph = | = 5 hours | |
| 6 |
Time taken to cover 40 km = 5 hours
| ∴ Average speed = | |
| Time taken |
| = | |
| 10 |
| = | = 7 kmph | |
| 10 |
