<PRE><B>Question 886573</B>
A truck is moving 40mph faster than a train. In the time that it takes the train to travel 150 miles, the truck travels 350 miles. Find their speeds.
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let x=speed of train
x+40=speed of truck
travel time=distance/speed (same for both)
..
{{{150/x=350/(x+40)}}}
350x=150x+6000
200x=6000
x= 30
x+40=70
speed of train=30 mph
speed of truck=70 mph</PRE>