Plz, Help me with this question

Atrain leaves little? rock, arkansas, and travels north at 90 kilometers per hour. another train leaves at the same time and travels south at 80 kilometers per hour. how long will it take before they are 680 kilometers? apart?

Given abc find the values of x and y. in your final answer, include all of your calculations.

Mr. t has been dating his girlfriend for one year nine months and six days how many hours has mr. t been in a relationship