Question 718947
q for quarters n for nickels


q+n=15 and 0.25q+0.05n=1.95.  Divide this second equation by 5 and then multiply by 100 to have 5q+n=39.


Your system to solve can be:
{{{5q+n=39}}}
{{{q+n=15}}}


Solve for q and n.


Answer: 7 quarters and 8 nickels.