A small school employs $5$ teachers who make between $\$40{,}000$ and $\$70{,}000$ per year.
The newest teacher, Valerie, decides to teach part-time which decreases her salary from $\$40{,}000$ to $\$20{,}000$ per year. The rest of the salaries stay the same.
**How will decreasing Valerie's salary affect the mean and median?**
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