Question 83130
TIME=DISTANCE/RATE. SEEING THAT THE TIMES ARE EQUAL THEN WE HAVE THE FOLLOWING EQUATION:
325/(R+25)=200/R NOW CROSS MULTIPLY:
325R=200(R+25)
325R=200R+5000
325R-200R=5000
125R=5000
R=5000/125
X=40 MPH FOR THE FREIGHT TRAIN.
PROOF
325(40+25)=200/40
325/65=200/40
5=5