The railway between station a and station B is 660 kilometers long. At 10:30 in the morning, a train runs from station a to station B at a speed of 90 kilometers per hour, At the same time, there is a train going from station B to station a at the speed of 75 kilometers per hour. How long can the two trains meet

The railway between station a and station B is 660 kilometers long. At 10:30 in the morning, a train runs from station a to station B at a speed of 90 kilometers per hour, At the same time, there is a train going from station B to station a at the speed of 75 kilometers per hour. How long can the two trains meet

The simplest method: divide the distance between two stations by their speed sum, that is 90 + 75 = 165, and 660 / 165 = 4 {hours}

The railway between station a and station B is 1660 km long. At 9:30 p.m. on August 30, a train runs from station a to station B at a speed of 90 km per hour. At 11:30 p.m. on that night, the train stops at the same station
A train goes from station B to station a at 93 kilometers per hour. When do the two trains meet

August 31, 8:20

The railway between station a and station B is 750 km long. At 9:30 p.m. on October 1, a train runs from station a to station B at a speed of 90 km per hour. At 11:00 p.m. on that day, a freight train runs from station B to station a at a speed of 100 km per hour. So when do the two trains meet?
It's 705 kilometers

（705-90×1.5）÷（100+90）
=（705-135）÷190
=570÷190
=3 hours
A: the two cars met at 2 a.m. on October 2