SOLUTION: A freight train leaves a station and travels north at 55 mph. Four hours later, a passenger train leaves on a parallel track and travels north at 66 mph. How long will it take the

Question 497378: A freight train leaves a station and travels north at 55 mph. Four hours later, a passenger train leaves on a parallel track and travels north at 66 mph. How long will it take the passenger train to overtake the freight train?
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
Freight train 55 mph
Passenger train 66 mph
Freight train 02:00
Passenger train 06:00
Difference in time= 04:00 => 4 hours
Freight train will have covered 220 miles before Passenger train starts from station
catch up distance= 220 miles
catch up speed = 66 -55 mph
catch up speed = 11 mph
Catchup time = catchup distance/catch up speed
catch up time= 220 / 11
catch up time= 20 hours
m.ananth@hotmail.ca

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