Question 1111862
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<pre>
Distance + distance = 315 miles


3*x      + 3*(x+25) = 315  miles    (<<<---=== x is the rate of the slower train)


3x       + 3x + 75  = 315


6x + 75 = 315  ====>  6x = 315 - 75 = 240  ====>  x = {{{240/6}}} = 40.


<U>Answer</U>.  Freight train rate is 40 mph.   Passenger train rate is  40 + 25 = 65 mph.
</pre>

Solved.


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