SOLUTION: A train leaves a station and travels north at a speed of 75 mph.Two hours​ later, a second train leaves on a parallel track and travels north at 105 mph. How far from the sta

Algebra ->  Customizable Word Problem Solvers  -> Travel -> SOLUTION: A train leaves a station and travels north at a speed of 75 mph.Two hours​ later, a second train leaves on a parallel track and travels north at 105 mph. How far from the sta      Log On

 =  + ,    (the "time" equation, where D is the distance)


105*D = 75*D + 2*75*105,


30*D = 2*75*105,


D =  =  = 5*105 = 525 miles.


Answer.  The faster train will catch the slower train in 525 miles from the station.