Question 1134173
<pre>
               SPEED         TIME            DISTANCE

WALKING         r            3/r              3

JOGGING        3r           3/(3r)=1/r        3

TOTAL                        4
</pre>
{{{highlight_green(3/r+1/r=4)}}}

-

{{{4/r=4}}}


{{{highlight(r=1)}}}---------walking speed

{{{highlight(3)}}}-------------jogging speed