Question 850754
D=RT
D=45T FOR THE FREIGHT TRAIN
D=75(T-3) FOR THE PASSENGER TRAIN
45T=75(T-3)
45T=75T-225
45T-75T=224
-30T=-225
T=-225/-30
T=7.5 HOURS TO OVERTAKE THE FREIGHT TRAIN.
45^7.5=337.5 MILES FOR THE FREIGHT TRAIN
75(7.5-3)=75*4.5=337.5 MILES FOR THE PASSENGER TRAIN.