Question 838935
{{{A/B=1/2}}}
1. {{{2A=B}}}
In 15 years,
{{{(A+15)/(B+15)=2/3}}}
{{{3(A+15)=2(B+15)}}}
2.{{{3A+45=2B+30}}}
Now substitute into eq. 2,
{{{3A+45=2(2A)+30}}}
{{{3A+45=4A+30}}}
{{{A=15}}}