DSSSB · Mathematics
Arjun covers a distance of 480 km at a speed of 60 km/hour, 540 km distance at a speed of M km/hour and 280 km at a speed of 70 km/hour by a car. If his average speed for the whole journey is 65 km/hour, then find the value of M.
- 64.6
- 67.5
- 69.3
- 68.8
Arjun covers a distance of 480 km at a speed of 60 km/hour, 540 km distance at a speed of M km/hour and 280 km at a speed of 70 km/hour by a car. If his average speed for the whole journey is 65 km/hour, then find the value of M.
- 64.6
- 67.5
- 69.3
- 68.8
Answer and detailed solution are available in the protected study screen.
Register or login to attempt