Question: Calculate the unemployment rate and the labor force participation rate in the following cases:
a. Employed: 100 million. Population: 200 million. In labor force: 110 million.
b. Unemployed: 10 million. Population: 200 million. Employed: 90 million.
c. In labor force: 30 million. Population: 80 million. Unemployed: 3 million.