Question 1055503
{{{A=(3/4)B}}}
{{{A-500=(1/2)B}}}
Substituting,
{{{(3/4)B-500=(1/2)B}}}
{{{(1/4)B=500}}}
{{{B=2000}}}
So then,
{{{A=(3/4)(2000)}}}
{{{A=1500}}}