Answer:
a. 30 million
b. 60%
c. 33.33%
Explanation:
The computation is shown below:
a) Labor force = employed + unemployed
= 20 million + 10 million
= 30 million
b) Labor-force participation rate = Labor force ÷ Working age population
= 30 million ÷ 50 million
= 60%
c) Official unemployment rate = unemployed ÷ labor force
= 10 million ÷ 30 million
= 33.33%