Math
posted by michael on .
Trains a and b are travelling in the same direction on parallel tracks. Train a is travelling at 40mph and train b is travelling 48mph.Train a passes a station at 3:10 a.m. If train b passes the same station at 3:40 a.m., at what time willtrain b catcth up tomtrain a?

Remember your formula d=rt
40t=48(t.30)
40t=48t14.4
combine like terms
40t48t=14.4
8t=14.4
isolate your t
t= 14.4/8 or 1.8 hours
With these word problems it is important to have your formula chart handy. This gives you a map to finding the answer.