Question 1173879
{{{a=r-5}}}


Four years "later":
{{{system(a+4,and,r-5+4)}}}

{{{system(a+4,and,r-1)}}}

Ron will be 2 times older than Amy.
?


That should mean,  {{{r-1=(a+4)+2(a+4)}}}
{{{r-1=3(a+4)}}}
{{{r-1=3a+12}}}
{{{r=3a+13}}}
-
and if you substitute from the first equation of the original system,
{{{a+5=3a+13}}}
{{{2a=5-13}}}----------which makes NO sense.



Bad Problem Description