Question 295702
First name your variables, {{{A}}} and {{{B}}}.
1.{{{A-B=88}}}
2.{{{B=20*A/100=0.2A}}}
Use eq. 2 in eq.1,
{{{A-0.2A=88}}}
{{{0.8A=88}}}
{{{highlight( A=110)}}}
Then from eq. 2,
{{{highlight( B=0.2*110=22) }}}