Question 1163467
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On a highway,  there are  TWO  such places/points that are  40 kilometers from the halfway between  A  and  B.




I don't know who is a composer to this problem - you,  or your professor,  or a third party 


            (definitely it is not from a textbook,  since textbooks are peer-reviewed), - 


but it is composed VERY UNPROFESSIONALLY.




/\/\/\/\/\/



After reading the post by Edwin.



            Edwin,  I did not say  "it is wrong",  although it is.


            I said  "it is UNPROFESSIONAL",  and it does not relate to the language (English, in this case), even.


&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Simply the formulation in the post is &nbsp;<U>ACROSS</U>&nbsp; of any human logic . . . 


&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;That is all . . . 




The purpose of study Math is to develop the mind of a student.


It is the FIRST purpose, but not a unique.


The second purpose is to teach a student to formulate his (or her) thoughts in a proper logic form.


But as the problem is presented in the post, it is something out of human logic, whichever language (existing on the Earth) it would use.



Be sure, that I know how to re-formulate (or interpret) the problem correctly.


But in this forum, we have one (or several) visitors, who permanently produce 

terrible Math problems formulations without having knowledge or experience on doing it properly.


I simply fight with them - I think that such persons should not litter the Internet with their production.



In the time of my studies in primary, secondary, high school and at the University, it was considered 
as a greatest possible shame to bring or to publish incorrect or unclear Math problem, and a person
who admitted it, lost his reputation at the same day and forever.



OK, now I will show you on how the problem should be formulated in accurate way.


<pre>
    Sam drives from City A to City B, and he takes 8 hours for the entire trip.
    Richard drives from City B to City A, and he takes 10 hours for the trip, 
    assuming they are driving on the same road. Sam leaves City A and 
    Richard leaves City B at the same time.

    When they meet on a highway, they revealed that the meeting point was 40 km away from the halfway. 
    How many hours will did they drive to get this point ?
    Express your answer as a mixed number.
</pre>


Now the logic and the logical sequence / chain of events is in the place.