Posts by Lassie76

    Yes, he will be in time. The supervisor needs (6,3/14) x 60 = 27 minutes to reach the switch.

    In these 27 minutes, train A travels (27/60)x 160 = 72 km and train B travels (27/60) x 120 =54 km. In total, they travel 126 km while they are 140 km apart from each other. There is approximately 2 minutes left to turn the switch.