Question 247814
rate*time=distance
and t= time
At first glance it might seem we don't have enough info.
but we are told the distance 405 and the two speeds
the time is the same for both car and train
so 

t*90+t*60=405
t*(90+60)=405
t(150)=405
t=405/150
t=27/10
t=2.7 hours or 2 hrs 42 minutes

Are you sure the distance is not 450?
IF it were 450 then we have
t*(90+60)=450
t*150=450
t=3 hours