A car traveling 115 km/h is 150 m behind a truck traveling 75 km/h. How long will it take the car to reach the truck? Ok I think I am doing this right but I can't get it to tell me I'm correct on the online homework. See what you think about what I'm doing: 150m= .15km so then, 115x=75x+.15 which yields x= .15 / 40 = .00375 s Is this not right? It says I am incorrect. Is there some procedure I am leaving out?