Question 1093232
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<pre>
Let J be john's speed, in km/h.

Then the Wilbur' speed is J-12 km/h.

In one hour John covered J kilometers, while Wilbour covered J-12 kilometers in opposite direction.


Hence, the distance between them in one hour is J + (J-12) = 2J-12.


From the other side, it is 159 km, according to the solution.


It gives you an equation

2J - 12 = 159.


The set up  is completed.
</pre>


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To see many other samples, examples and solved problems of this kind, look into the lessons

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=http://www.algebra.com/algebra/homework/word/travel/Travel-and-Distance-problems.lesson>Travel and Distance problems</A>  

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=https://www.algebra.com/algebra/homework/word/travel/Travel-and-Distance-problems-for-two-bodies-moving-toward-each-other.lesson>Travel and Distance problems for two bodies moving in opposite directions</A> 

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=https://www.algebra.com/algebra/homework/word/travel/Typical-catching-up-Travel-and-Distance-problems.lesson>Travel and Distance problems for two bodies moving in the same direction (catching up)</A>

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