Question 1091897
.
The solution by @josgarithmetic 

<pre>
    {{{x=(13+sqrt(197))/2}}}


    {{{x=13.5178}}} {{{hours}}}
    or 13 hours 31 minutes
</pre>

is  {{{highlight(WRONG)}}}.  The correct solution is 

<pre>
    x = {{{(15+sqrt(197))/2}}}


    x = 14.5178 hours
    or 14 hours 31 minutes
</pre>