Question 1166233
Constant Travel Rates are based on {{{R=D/T}}}, for speed R, distance D, and time T.

<pre>
                       SPEED          TIME          DISTANCE

firstpart              63              {{{2&3/4}}}         

secondpart             57            {{{3&1/2}}}         

TOTALS
</pre>



The "expression to model her distance", if using the given values,
{{{highlight((63)(2&3/4)+(57)(3&1/2))}}}



Finished results:
first part distance 173.25 miles
second part distance 199.5 miles
Total distance, 372.75 miles