Question 1168744
{{{system(d/n=3,q-d=10,5n+10d+25q=1130)}}}


The first two equations can be expressed one variable in terms of d.'
{{{system(n=d/3,q=d+10)}}}


and the money equation can be simplified:  {{{n+2d+5q=226}}}.


Substituting for n and q,
{{{d/3+2d+5(d+10)=226}}}
-
{{{d/3+2d+5d+50=226}}}
{{{d/3+7d=176}}}
{{{d+21d=528}}}
{{{22d=528}}}
{{{highlight(d=24)}}}------------from this, find values for n and q.