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At p.m., a passenger train and a freight train both left Kalamazoo, Michigan. Right now, the passenger train is miles west of Kalamazoo. The freight train is now miles east of Kalamazoo. The passenger train averages miles per hour faster than the freight train. What time is it now?

Distance = (rate)(time)
Write a distance equation for each train.

Remember both trains travel the same time . What do you have to do about the rates?