<PRE><B>Question 316664</B>
Freight train A goes from point A to point B at 40 miles per hour.
distance = x miles ; rate = 40 mph ; time = x/40 hrs.
------------------------------------------------------------

 Freight train B takes 2 hours longer to go from point A to point B because it only goes 30 miles an hour. 
distance = x miles ; rate = 30 mph ; time = x/30 hrs
---------------------------------------------

What is the distance from point A to point B?
Equation:
slower train - faster train = 2 hrs
x/30 - x/40 = 2 hrs
40x - 30x = 2*40*30
10x = 2*40*30
x = 240 miles
====================
Cheers,
Stan H.
====================

----------------------------
</PRE>