a train travels at a speed of 60 km/h for 0.52hours and at 30 km/h for the next 0.24 hour and then at 70 km/h for the nxt 0.71 km/h what is the average speed of the train
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avg speed is total distance by total time
total distance (d) = 60*.52 + 30*.24 + 70*.71 = use calc.
total time (t) = .52 + .24 + .71 = something
avg speed = d/t
total distance (d) = 60*.52 + 30*.24 + 70*.71 = use calc.
total time (t) = .52 + .24 + .71 = something
avg speed = d/t
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