1.

A body travels one third of the distance at speed 10km/h, next one third at speed 20km/h and the remaining at speed of 40km/h. What is the average speed for entire journey?

Answer»

A body travels one third of the distance at speed 10km/h, next one third at speed 20km/h and the remaining at speed of 40km/h. What is the average speed for entire journey?




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