Question 1046384
<pre>
                 SPEED            TIME        DISTANCE
BIKE              12
WALK               2
Totals                             9            48
</pre>

Uniform Rates for Travel, RT=D for relating rate, time, distance.
Know what to do?


<pre>
                 SPEED            TIME        DISTANCE
BIKE              12               x           12x
WALK               2               y            2y
Totals                             9            48
</pre>
How about now?



{{{highlight_green(system(x+y=9,12x+2y=48))}}}


{{{system(x+y=9,6x+y=24)}}}


{{{(6x+y)-(x+y)=24-9}}}, to quickly eliminate the y.
{{{5x=15}}}
{{{highlight(x=3)}}}--------three hours at biking speed


{{{y=9-x}}}
{{{y=9-3}}}
{{{highlight(y=6)}}}---------six hours at walking speed