2005 AMC 12B Problems/Problem 9

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Problem

This problem has not been edited in. If you know this problem, please help us out by adding it. On a certain math exam, $10%$ (Error compiling LaTeX. Unknown error_msg) of the students got $70$ points, $25%$ (Error compiling LaTeX. Unknown error_msg) got $80$ points, $20%$ (Error compiling LaTeX. Unknown error_msg) got $85$ points, $15%$ (Error compiling LaTeX. Unknown error_msg) got $90$ points, and the rest got $95$ points. What is the difference between the mean and the median score on this exam?

Solution

See also