Question 1074218
The description is missing time for cycling the same distance.
<pre>
                SPEED       TIME       DISTANCE
WALK            r            6          d
CYCLE           r+7          t          d
</pre>
The question asks for r and r+7.


{{{6r=t(r+7)}}}
{{{6r=tr+7t}}}
{{{6r-tr=7t}}}
{{{(6-t)r=7t}}}


{{{highlight_green(r=(7t)/(6-t))}}}