Question 1181108
<pre>
            SPEEDS         TIME           DIST.

Bob            r+5          312/(r+5)       312

George          r           282/r           282
</pre>
Those two time quantities were given as equal, so  
{{{312/(r+5)=282/r}}}



{{{(6*52)/(r+5)=(6*47)/r}}}


{{{52/(r+5)=47/r}}}


{{{52r=47(r+5)}}}


{{{52r=47r+235}}}


{{{5r=235}}}


{{{system(r=47,r+5=52)}}}