DSSSB · Mathematics
Shubham covers distances of 7,900 km, 1,500 km, and 250 km at speeds of 79 km/h, x km/h and 10 km/h, respectively. If his average speed for the whole journey is km/h, what is the value of x?
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Shubham covers distances of 7,900 km, 1,500 km, and 250 km at speeds of 79 km/h, x km/h and 10 km/h, respectively. If his average speed for the whole journey is km/h, what is the value of x?
- 15
- 10
- 13
- 20
Answer and detailed solution are available in the protected study screen.
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