Question 1147914
.


            The solution by @josgarithmetic is  WRONG,


            so I came to bring the correct solution.



<pre>
Total Miles of Distance

    123 + 4 + 191 = 318



Total Hours of Time

    2 + {{{1/4}}} + {{{3}}}{{{3/4}}} = 6 hours.



Average speed is total miles divided by total time  {{{318/6}}} = 53 miles per hour.    <U>ANSWER</U>
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