Solving Equations: Word Problems - Examples & Practice

Consider the sequence of six real numbers $60$, $10$, $100$, $150$, $30$, and $x$.

The average (arithmetic mean) of this sequence is equal to the median of the sequence.

(Note: The median of a sequence of six real numbers is the average of the two middle numbers after all the numbers have been arranged in increasing order.)

Source: Math Prize for Girls