Question 1204785
Two quantities of money:  A and B.
From given, you can understand that {{{A+B=48}}}.  


The first sentence literally means   {{{(2/5)A=(2/3)B}}}.



You will have no trouble solving the system.


{{{A/5=B/3}}}

{{{3A=5B}}}



So the system can be changed to  
{{{system(A+B=48,3A-5B=0)}}}


Try this:
{{{system(-3A-3B=-144,3A-5B=0)}}}
and ADD...
{{{-8B=-144}}}
{{{8B=144}}}
{{{highlight(B=18)}}}


{{{highlight(A=30)}}}