In April 2000, the United States had a labor force of 141,230,000, employment of 135,706,000, and there were 67,986,000 people not in the labor force (all numbers rounded to the nearest 1000)

a) Computation of Unemployment Rate:

Unemployment Rate = (Unemployed / Labor force) * 100 

Here,

Unemployed = Labor force - Employed = 141,230,000 - 135,706,000 = 5,524,000

Labor Force = 141,230,000

Unemployment Rate = (5,524,000/141,230,000) *100 = 3.91%

b) Computation of Participation Rate:

Participation Rate = (Labot Force / Total Populatuion) * 100

  = (141,230,000 / (141,230,000 + 67,986,000)) * 100

  = (141,230,000 / 209,216,000) * 100

Participation Rate = 67.50%

c) Computation of Employment Ratio:

Employment Ratio = (Employed / Labor force) * 100 

= (135,706,000/141,230,000) *100

Employment Ratio = 96.09