Explanation Given the number of people in the Civilian labor force is 100 million and the number of employed people is 90 million. The number of unemployed people can be calculated as the difference between the civilian labor force and the number of employed people. The number of unemployed people can be calculated using Equation (1) as follows: Number of unemployed people = ( Civilian labor force − Number of employed people ) (1) The number of unemployed people can be calculated by substituting the respective values in Equation (1) as follows: Number of unemployed people = 100 − 90 = 10 Thus, the number of unemployed people is 10 million