on a track ,a train travels the first 30km at a uniform speed of 30km/h. Calculate the speed with which the train should move rest of the track so as to average 60km/h for the entire trip.
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remove my answer idk the answer lol sry
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I think This cud be the question
On a 120 km track, a train travels the first 30 km with a uniform speed of 30 km/h. How fast must the train travel the next 90 km so as to average 60 km/h for the entire trip?
the answer for the question above is in the following attachment
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