Solve for x ----------- The problem looked simple. A train headed east at 25, another headed west at 45. When did they meet? But what if the tracks weren't parallel? What if they were on a hill? What if one saw a moose and had to slow down? What if the conductor was on a tight schedule? What if they were on the same track? What if they were in a valley? What if one saw a bear and had to speed up? What if the conductor desperately needed to kill time? I'm afraid, mister that I can't solve this problem.