A train covers the first 160 km of a journey at 40 km/h, the next 180 km at 45 km/h, and
the last 200 km at 50 km/h. Find (i) the total time it takes to complete the journey and
(i) the average speed of the train during the whole journey.
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Step-by-step explanation:
hence the answer is 45 km/hr
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