1.

Bob has covered some distance with a speed of 50 km/hr in 2 hrs. And then some more distance in another 2 hrs, with a speed of 40 km/hr. Find the average speed for his entire journey.

Answer»

Bob has covered some distance with a speed of 50 km/hr in 2 hrs. And then some more distance in another 2 hrs, with a speed of 40 km/hr. Find the average speed for his entire journey.




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