Question 298907
D=RT
290=(R+10)T PASSENGER TRAIN 
T=290/(R+10)
240=RT FREIGHT TRAIN
T=240/R
290/(R+10)=240/R
290R=240(R+10)
290R=240R+2400
290R-240R=2400
50R=2400
R=2400/50
R=48 MPH FOR THE FREIGHT TRAIN.
48+10=58 MPH FOR THE PASSENGER TRAIN.
240=48T
T=240/48
T=5 HOURS IS THE TIME OF THE TRIP.
PROOF:
290=58*5
290=290