Question 1132816
Putting the description into equations:
{{{system(3y=5x+30,and,y+5x=50)}}}.


You could solve by graphing these if you want but easier to use simple algebra.

{{{system(5x-3y=-30,5x+y=50)}}}
{{{E2-E1}}}{{{gives}}}

{{{4y=80}}}

{{{y=20}}}

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{{{5x=50-y}}}
{{{5x=30}}}
{{{x=6}}}

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{{{system(highlight(x=6),and,highlight(y=20))}}}