Question 1109003
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<pre>
The "distance" equation


    11*(r-18) = 8*r,      (saying that the distance in both ways is the same)


where "r" is the average speed on the return drive (which is under the question).


11r - 11*18 = 8r  ====>  11r - 8r = 11*18  ====>  3r = 11*18  ====>  r = {{{(11*18)/3}}} = 66.


<U>Answer</U>.  The average speed on the return trip was 66 miles per hour.
</pre>

Solved.


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To see other similar introductory Travel and Distance problems, see 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>

in this site.