Question 1118767
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As I understand the condition, it represents (in encrypted form) the following information:


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    There are two legs of the right angled triangle - interstate highways,

    the eastern portion, and the northern portion. 

    One leg is 5 miles shorter than the other.

    The hypotenuse is 25 miles - the rural route.
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I don't like very much this way of presenting problems, when the solution is to de-encrypt the authors words.


So, I will not solve it farther. My work on  de-encrypting is just enough.


I only want to add that from my de-encrypting it follows immediately that the triangle is (3-4-5) right-angled 


triangle with the legs of  15  and  20  miles  and  the hypotenuse of 25  miles.



From this point, you can easily complete the solution on your own.
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