Question 314691
D=RT
360=(R+R+20)2
360=(2R+20)2
360=4R+40
4R=360-40
4R=320
R=32O/4
R=80 km/h FOR THE SLOWER TRAIN.
80+20=100 km/h.
PROOF:
360=(80=100)2
360=180*2
360=360