Question 1034622
<pre>
{{{system(d=300,h=2,s=5,r=knownActualRate,t=knownActualTime)}}}


                RATE           TIME         DISTANCE

ACTUAL           r             t            d

HYPOTH          r+s            t-h          d
</pre>


The basic travel rates rule is RT=D to relate rate, time, and distance.
Form the equations for the system and solve for the unknown variables.