SOLUTION: A "Local" train leaves a station and runs at an average rate of 35 mph. An hour and a half later an "Express" train leaves the station and travels at an average rate of 56 mph on a

Algebra ->  Probability-and-statistics -> SOLUTION: A "Local" train leaves a station and runs at an average rate of 35 mph. An hour and a half later an "Express" train leaves the station and travels at an average rate of 56 mph on a      Log On


   



Question 381394: A "Local" train leaves a station and runs at an average rate of 35 mph. An hour and a half later an "Express" train leaves the station and travels at an average rate of 56 mph on a parallel track. How many hours after it starts will the Express overtake the Local?

Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
A has 52.5 mi lead
overtake speed is 20 mph
52.5/20=2.625 hrs=2 hr 37.5 min