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While travelling from Nashik to Daman, Harsh drove for 1 hour at a speed of 50 km/h and for the next three hours at 60 km/h.
What was his average speed for the whole trip?
56 km/h
57.5 km/h
55 km/h
58.5 km/h
- Harsh drove for a total of 4 hours: 1 hour at 50 km/h and 3 hours at 60 km/h.
- In the first hour, he covered a distance of 50km/h×1hour=50km.
- In the next three hours, he covered a distance of 60km/h×3hours=180km.
- Total distance covered is 50km+180km=230km.
- Average speed is the total distance divided by the total time: 230km4hours.
- This equals 57.5 km/h.
Therefore, the correct average speed is:
- Option: 2 - 57.5 km/h
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