Question 888672
{{{Money/PoundsMix}}}={{{Price}}}


Let x = how many pounds of the $20/pound coffee.


{{{highlight_green((20x+90*60)/(x+60)=60)}}}


Some simplification,
{{{(2x+9*6*10)/(x+60)=6}}}
{{{(x+9*3*10)/(x+60)=3}}}
{{{x+270=3(x+60)}}}
{{{x+270=3x+180}}}
{{{270-180=2x}}}
{{{2x=90}}}
{{{highlight(x=45)}}}