Question 183569
D=RT
THE DISTANCES ARE THE SAME THUS:
100T=120(T-12/60)
100T=120T-120*.2
100T=120T-24
100T-120T=-24
-20T=-24
T=-24/-20
T=1.2 HOURS AFTER TRAIN A LEAVES THE STATION THEY WILL MEET.
PROOF:
100*1.2=120(1.2-.2)
120=120*1
120=120