2000 PMWC Problems/Problem I14
Problem
A copy machine has a following enlargement/reduction buttons:
![\[\begin{tabular}{|l|l|l|l|l|l|l|} \hline 250\% & 200\% & 128\% & 125\% & 100\% & 50\% & 10\% \\ \hline \end{tabular}\]](http://latex.artofproblemsolving.com/0/1/7/0176bdca670f44d403b2d4628b3ea8686eb1abc9.png)
The buttons 
, 
, and 
are out of order and cannot be used any more. Sam wants to make a copy that is the same size as the original document by using the remaining buttons. When he presses a button, he has to pay 
. What is the minimum amount he has to pay?
