SOLUTION: A passenger train traveling at 90mph leaves Amarillo, Texas 1 hour after a freight train. When will the passenger train pass the freight train which is traveling at 75mph?
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Question 432456: A passenger train traveling at 90mph leaves Amarillo, Texas 1 hour after a freight train. When will the passenger train pass the freight train which is traveling at 75mph? Answer by ewatrrr(24785) (Show Source):
Hi
Let x and (x+1)represent the times 90mph & 75mph train travel before they meet
Note: D = r*t and distance traveled the same by both trains
90x = 75(x+1)
15x = 75
x = 5hr, time 90mph(passenger train) travels before they meet
CHECKING our Answer***
90mph*5hr = 75mph*6hr = 450mi