Question 593893
<pre> 
 1.  $1 =                   $1
 2.  $5 =                   $5
 3.  $5 + $1 =              $6      
 4.  $10 =                 $10   
 5.  $10 + $1 =            $11
 6.  $10 + $5 =            $15
 7.  $10 + $5 + $1 =       $16
 8.  $20 =                 $20
 9.  $20 + $1 =            $21
10.  $20 + $5 =            $25       
11.  $20 + $5 + $1 =       $26
12.  $20 + $10 =           $30
13.  $20 + $10 + $1 =      $31
14.  $20 + $10 + $5 =      $35
15.  $20 + $10 + $5 + $1 = $36

Edwin</pre>