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A train travels the first 15 km at a uniform speed of 30km/h, next 10 km at a uniform speed of 20km/h and final 75 km at a uniform speed of 50km/h. the average speed for the entire journey of the

Answer» A train travels the first 15 km at a uniform speed of 30km/h, next 10 km at a uniform speed of 20km/h and final 75 km at a uniform speed of 50km/h. the average speed for the entire journey of the


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