Apassenger train left austin, texas at 12: 00 pm bound for dallas, exactly 210 miles away; it traveled at a steady 50 miles per hour. at the same time, a freight train left from dallas headed for austin at a steady 20 miles per hour. at the same time a fly leaped from the nose of the passenger train and flew along the track at 100 miles per hour. when the fly touched the nose of the oncoming freight train, she turned around and flew back at 100 miles per hour, when she reached the nose of the passenger train, she instantly turned and flew back toward the freight train. she continued turning and flying until the trains collided.1. after how long did the trains collide? 2. how long before the fly reached the oncoming freight train? 3. how far had the fly flown before the trains collided?