<PRE><B>Question 656933</B>
Call $1 bills x and $5 bills y.  With the given info there are two equations and two unknowns.  That&#39;s easily solved.&lt;P&gt;
x+y = 17 - that expresses the number of bills.&lt;P&gt;
1x + 5y = 53.  &lt;P&gt;
Solve the first for x in terms of y and substitute that into the second.&lt;P&gt;
x = 17 - y&lt;P&gt;
17 - y + 5y =53&lt;P&gt;
17 +4y = 53&lt;P&gt;
4y = 36&lt;P&gt;
y = 9&lt;P&gt;
Substitute that back into the first equation:  x + 9 = 17 and then x = 8&lt;P&gt;
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