Question 997320
n nickels, d dimes, q quarters;


{{{system(0.05n+0.1d+0.25q=5.45,n=d+2,q=-9+d)}}}


Divide the money equation by 0.05 and adjust the quarters equation.
{{{system(n+2d+5q=109,n=d+2,q=d-9)}}}
Notice that the n and the q equations both are in terms of d.  

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You see what you can do?