Question 1114875
{{{system(r-g=18,r+15=2(g+15))}}}


{{{r+15=2g+30}}}
{{{r-2g=15}}}



{{{system(r-g=18,r-2g=15)}}}


Subtract second equation from first equation of the system.
{{{g=3}}}
-
{{{r=21}}}


Ray is 21 and Gloria is 3.