I'd pretty much entirely re-do high school - I was painfully shy and never really made friends because I just assumed nobody liked me. Now that I have more social skillz I think if I re-did it I might have had a better time. Then again, high school was 5 years ago, who really needs to go back?
A passenger train leaves the train depot 2 hours after a freight train left the same depot. The freight train is traveling 20 mph slower than the passenger train. Find the rate of each train, if the passenger train overtakes the freight train in three hours.