Question 761291
That goes like two separate questions.  


Let s = susie's age now and L = Lita's age now.


Person____________4yearsago________now________
Susie_____________s-4______________s=3*(L-4)
Susie______________________________s=L+2
Lita______________L-4_______________L


TWO descriptions were given about Susie's age now.  Both of those depend on Lita's age.

s=s
{{{3(L-4)=L+2}}}
{{{3L-12=L+2}}}
{{{2L-14=0}}}
{{{2L=14}}}
{{{highlight(L=7)}}}  and so {{{highlight(s=9)}}}