Posts by Plungeman

    yes he will be on time


    runner needs 0.45h to get there (6,3/14)

    Train A does in these 27 min: 72 km (0.45* 160)

    Train B does 54 km (0.45*120)


    and they would collide on 30 min: 140 km = x. 160 +x 120 --> X =30


    supervisor has 3 min (unknown if that is enough to manually switch of course after the running)