Total population of Hockeytown: 307 thousand
Labor force: 157.6 thousand
Employed people: 139.9 thousand
It is importante to remember that the unemployment rate is defined as the percentage of unemployed workers in the total labor force.
To find the number of unemployed workers, we have to subtract the employed people from the labor force:
157,600 - 139,900 = 17,700 people without work.
Now for the rate:
17,700/157,600 = 0,1123 =11%
So, the unemployment rate is 11%.