Question 1096813
"...father is three times older than...",
{{{system(f=j+3j,f+j=68-6-6)}}}


{{{system(f=4j,f+j=56)}}}


Not working if expecting whole numbered solution.




Just in case mistaken wording,
taking as "father is three times as old as..."
{{{system(f=3j,f+j=56)}}}

{{{4j=56}}}

{{{j=14}}}------John
-
{{{f=42}}}------Father