Question 328449
d=rt
Train a: d=40t
Train b: d=48(t-.25)
40t=48(t-.25)
40t=48t-12
40t-48t=-12
-8=-12
t=-12/-8
t=1.5 hours after 3:10 they will meet.
Proof:
40*1.5=48(1.5-.25)
60=48*1.25
60=60