Question 1134418
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<pre>
Let x be the regular average rate, in miles per hour.


Under the severe condition, the average rate was  (d-10) miles per hour.


The distance is the same:


2.5*x = 3*(x-10).


Simplify and solve:


2.5x = 3x - 30

30 = 3x - 2.5x

30 = 0.5x  ===================>  x = 30/0.5 = 60 milies per hour.


<U>ANSWER</U>.  The distance is  60*2.5 = 150 miles.
</pre>

Solved.



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