Question 325215
D=RT
200=(R-14)T
T=200/(R-14)
270=RT
T=270/R
200/(R-14)=270/R
270(R-14)=200R
270R-3,780=200R
270R-200R=3,780
70R=3.780
R=3,780/70
R=54 ANS. FOR TRAIN B.
54-14=40 ANS. FOR TRAIN A.
PROOF:
200=40T
T=200/40
T=5 HOURS.
5=270/54
5=5