Question 1074210
{{{0.05n+0.1d+0.25q=9.85}}}
{{{n+2d+5q=197}}}, money count, simplified equation



{{{d/q=2}}}
{{{q=d/2}}}



{{{n=2+2d}}}
{{{2d=n-2}}}
{{{d=(n-2)/2}}}




Substitute results into the simplified money count equation.
{{{n+2(n-2)/2+5(d/2)=197}}}


{{{n+n-2+5((n-2)/2)/2=197}}}


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{{{2n+(5n-10)/4=199}}}
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{{{highlight(n=62)}}}



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Also, the other two coin counts, {{{system(d=30,q=15)}}}