Question 1133610
{{{d+q=16}}}
{{{d=16-q}}}
-
{{{0.25q+0.1(16-q)=3.1}}}


{{{0.25q+1.6-0.1q=3.1}}}
{{{0.15q=3.1-1.6}}}
{{{0.15q=1.5}}}
{{{q=1.5/0.15}}}
{{{highlight(q=10)}}}-------------------{{{highlight(d=6)}}}