The distance between stations A and B is 148 km. An express train left station A towards station B with the speed of 80 km/hr. At the same time, a freight train left station B towards station A with the speed of 36 km/hr. They met at station C at 12 pm, and by that time the express train stopped at intermediate station for 10 min and the freight train stopped for 5 min. Find: The time when the freight train left station B.