<PRE><B>Question 319969</B>
 passenger train 12mph faster than the speed of a freight train.
The passenger train travels 310 miles in the same time it takes the freight train to travel 250 miles. What is the speed of each train?
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freight train speed be x
passenger train speed = x+12 mph
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310 / x+12= 250 /x
310x= 250(x+12)
310x=250x+3000
310x-250x=3000
60x=3000
x=50 freight train speed
passenger train speed = x+12 = 50+12= 62 mph</PRE>