Question

There are 2 trains, one in Los Angeles and the other one in Denver. Train 1 left Los Angeles at 10am and was traveling east at a speed of 100 mph. Train 2 left Denver at 1pm and was traveling west at 80 mph. Which train is closer to Los Angeles when they meet each other?

Answer 1

at 1 pm Train 1 had gone 300 miles.

Now you know that one train is going 5/4 as fast as the other.

see what you can do from here.