Mathematics, 28.07.2019 19:30, vieraml58

After traveling exactly half of its journey from station a to station b, a train was held up for 10 minutes. in order to arrive at city b on schedule, the engine driver had to increase the speed of the train by 12 km/hour. find the original speed of the train before it was held up, if it is known that the distance between the two stations is 120 km.

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After traveling exactly half of its journey from station a to station b, a train was held up for 10...