Mathematics, 13.08.2020 02:01 arielove62
A train travels 250 km with a average speed of 75 km/hr and 350 km with 70km/hr and 200 km with average speed of 30km/hr. What will the average speed of whole journey of the train?
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A train travels 250 km with a average speed of 75 km/hr and 350 km with 70km/hr and 200 km with aver...
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