2005 AMC 12B Problems/Problem 9
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Problem
On a certain math exam, $10%$ (Error compiling LaTeX. Unknown error_msg) of the students got 
points, $25%$ (Error compiling LaTeX. Unknown error_msg) got 
points, $20%$ (Error compiling LaTeX. Unknown error_msg) got 
points, $15%$ (Error compiling LaTeX. Unknown error_msg) got 
points, and the rest got 
points. What is the difference between the mean and the median score on this exam?
