If the number of employed persons in a country equals 24 million, the number of unemployed persons equals 8 million, and the number of persons over age 16 in the population equals 40 million, the unemployment rate equals:

Unemployment rate is 25%

Explanation:

The percentage of people eligible for job and not currently involved in paid work or self employed and available for work as well is called rate of unemployment. It is the percentage of people who is not currently woking seeking the job.

Labor Force = Employed persons + Unemployed persons

Labor Force = 24 million + 8 million

Labor Force = 32 million

Unemployment rate = ( Unemployed persons / Labor force ) x 100

Unemployment rate = ( 8 million / 32 million ) x 100 = 25%