“Artie starts walking east at 4 km/hr on a long, flat recreation trail from the trailhead at 8:00 AM. At 8:45 AM Bill starts from the same trailhead running at 10 km/hr along the same path in the same direction as Artie. Once Bill catches up to Artie, they both continue running together at 10 km/hr. At the moment that Bill catches Artie, Carlos leaves the trainhead in his car travaling at a constant speed along a road that parallels the train to pick Artie and Bill up, and catches them after six minutes of driving. What time of day is it when the three of them meet, and how fast was Carlos driving?” (from experts.about.com/q/algebra)

I’d love to see a picture of that one.