Question 893544
x, how many daily papers
y, how many sunday papers


{{{0.15x+0.35y=1300}}}, the unit is cents.


{{{x=2y}}}, twice as many daily papers as sunday papers.


SOLVE---using substitution


{{{0.15(2y)+0.35y=1300}}}
{{{0.30y+0.35y=1300}}}
{{{0.65y=1300}}}
{{{y=1300/0.65}}}
{{{highlight(y=2000)}}}, sunday papers
{{{highlight(x=4000)}}} daily papers.