a train moves with a speed of 30 km/h in the first 15 minutes with another speed of 40km/h in 15 minutes and then with a speed of 60km/m in the last 30mitutes calculate the average speed of the train for his journey
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Answer:
130km/m
Explanation:
30+15+15+40+60 sothat the answe is 130km/m
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