Question 830964
Count of nickles, n
Count of quarters, q


{{{n+q=13}}}, and {{{0.05n+0.25q=2.45}}}.

The sum of the quantity of coins is 13, as given and symbolized.
Think about the units involved in the numbers for the money value equation.
{{{0.05*(dollars/nickle)}}} and {{{n*nickles}}} would give the term, {{{0.05(dollars/nickle)*n*nickles=0.05n(dollars/nickle)(nickle)=0.05*dollars}}}...


The system of equations is
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{{{n+q=13}}}
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{{{0.05n+0.25q=2.45}}}
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