a train travels the first 30km of 120km track with a uniform speed of 30km/h. what should be the speed of the train to cover the remaining distance of the track so that it's average speed is 60km/h for the entire trip?
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the train cover 30km of 120km in with the speed of 30
let 30km/60minut=2minut per km
the left distance is 120-30=90
60km/h. /90km=1.5
it's means the train cover it's distance in 1h30m
let 30km/60minut=2minut per km
the left distance is 120-30=90
60km/h. /90km=1.5
it's means the train cover it's distance in 1h30m
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