A train moves with a speed of 30km/h in the first 15 minutes, with another speed of 40km/h in the next 15 minutes and then with the speed of 60km/h in the last 30 minutes. Calculate the average speed of the train for this journey.
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QUESTION:
A train moves with a speed of 30 kmh in the first 15 minutes, with another speed of 40 kmh the next 15 minutes, and then with a speed of 60 kmh-1 in the last 30 minutes. Calculate the average speed of the train for this journey.
Answer:
(Ans. 47.5 kmh)
Explanation:
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