2016 AMC 12A Problems/Problem 4
Solution
must be in the middle of the list. Order the known list first: . occurs the most times, and it is the average of the list.
is either or because it is the median and the mode.
is the average of the set values.
\[x=\boxed{\textbf{(D)}\text{ 90}\] (Error compiling LaTeX. Unknown error_msg)