Question 1054542
1.{{{B=S+4}}}
Five years ago,
{{{(B-5)+(S-5)=48}}}
{{{B+S-10=48}}}
{{{B+S=58}}}
From eq. 1,
{{{B-S=4}}}
Add the two equations,
{{{B+S+B-S=58+4}}}
{{{2B=62}}}
{{{B=31}}}
So,
{{{31=S+4}}}
{{{S=27}}}