Question 1185854
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<pre>

Write the time equation


    {{{76/r}}} - {{{76/(4r)}}} = 3  hours.


    {{{76/r}}} - {{{19/r}}} = 3

    
        {{{57/r}}}   = 3

         r    =  {{{57/3}}} = 19 miles per hour (Rico's rate).    <U>ANSWER</U>
</pre> 

Solved.