Question 174206
Trains A and B are traveling in the same direction on parallel tracks.
----------------------------- 
Train A is traveling at 60 mph and train B is traveling at 80 mph.
----------------------------- 
Train A passes a station at 4:10am. If train B passes the same station at 4:22am.
-------------
At what time will train B catch up to train A? 
--------------------------------------
Train A DATA:
rate = 60 mph ; distance = x miles ; time = x/60 hours
--------------
Train B DATA:
rate = 80mph ; distance = x miles ; time = x/80 hours
--------------
EQUATION:
A time - B time = (12/60) hour
x/60 - x/80 = 1/5 hr
x/12 - x/16 = 1
(16x - 12x) = 12*16
4x = 12*16
x = 3*16 = 48 miles
=====================
Cheers,
Stan H.