Question 524332
A train leaves the station at 6:00pm traveling west at 80mph. On a parallel track,a second train leaves the station 3 hours later traveling west at 100mph, At what time will second trdain catch up with the first?

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In 3 hours, the 1st train is 240 miles away (80*3)
The 2nd train gains on it at 20 mi/hr (100 - 80)
240/20 = 12 hours from 9 PM to catch up