Question 434074
<pre>
               NOW           IN 11 YEARS
John           89-m          89-m+11=100-m
Father          m             m+11
SUM             89           89+2*11=111                 
</pre>
Description makes that {{{m+11=2(100-m)}}}.


{{{m+11=200-2m}}}
{{{3m=200-11}}}
{{{3m=189}}}
{{{highlight(m=63)}}}


John's Father, 63
John, 26