SOLUTION: two trains leave from a train station at the same time in the same direction. Train A is traveling at 50mph and train B is traveling at 70mph. What's the expression to figure out t

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Question 854518: two trains leave from a train station at the same time in the same direction. Train A is traveling at 50mph and train B is traveling at 70mph. What's the expression to figure out the distance between the two trains at any given time
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Relative to the slower train, the faster train is
constantly increasing it's lead by the difference
in their speeds
+70+-+50+=+20+
Let +d+ = the distance between them
Let +t+ = the time in hours after they leave the station
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+d+=+20t+