Answer:
Adults= 239.75 million.
Step-by-step explanation:
Giving the following information: 
In 2011, the Bureau of Labor Statistics (BLS) announced that of all adult Americans, 139.93 million were employed, 13.43 million were unemployed, and 86.39 million were not in the labor force.
Adults= 139.93 + 13.43 + 86.39= 239.75 million.