SOLUTION: A train leaves Berlin at 3:00PM with a speed of 85 km/h towards the north. Another train leaves at the same time from the same station towards the south with a speed of 95 km/h. Ho

Question 1157784: A train leaves Berlin at 3:00PM with a speed of 85 km/h towards the north. Another train leaves at the same time from the same station towards the south with a speed of 95 km/h. How long (time in minutes) will it take before they are separated by 630 kilometers?
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
Their combined speed is directly apart at 85+95=180 km/h
630 km/180 km/h=3.5 hours
or 210 minutes.
Also, 180 km/h is 3 km/minute and 630km /3 km/min=210 min
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