Answer
$Mean=50$ thousand dollars.
$Median=50$ thousand dollars.
$Mode=50$ thousand dollars.
Work Step by Step
The given salaries are already in ascending order.
$Mean=\frac{30+30+45+50+50+50+55+55+60+75}{10}=50$
$Median=\frac{50+50}{2}=50$. The mean between the fifth and the sixth values.
$Mode=50$. The highest frequency.
