Question 709417
D=RT
D=40T
D=35(T+.25)
40T=35(T+.25)
40T=35T+8.75
40T-35T=8.75
5T=8.75
T=8.75/5
T=1.75 HOURS FOR THE 40 MPH TRAIN.
D=40*1.75=70 MILES ANS.
70=35(1.75+.25)
70=35*2
70=70