<PRE><B>Question 1052233</B>
d dimes
n nickels
s original STARTING amount of money in dollar units



{{{system(d/n=2,0.1d+0.05n=s,0.1d+0.25n-(0.1d+0.05n)=2.40)}}}
Recheck this with the description and assigned variables.  Does this make sense for you?  If yes, then simplify and continue to solve.  Notice only used d and n for dimes and nickels, and another variable for how many QUARTERS was not used; because reference was described for relating quarters to nickels as the same coin count.


{{{system(d=2n,0.2n=2.40)}}}


{{{system(d=2n,2n=24)}}}------Notice that the equation using s was no longer needed.



{{{system(n=12, d=24)}}}</PRE>