Participation Rate is 80 Percent
20% are not in the Labor Force/Market.
So, the 200 Million people that is not participating Represents 20% of the working age population, or (0.20 * x ) equals 200,000,000, where X is the working age population. Then x equals 200,000,000/ 0.20 equals 1,000,000,000 or 1 Billion. So with the 200,000,000 of the 1,000,000,000 people being outside the labor force,
Therefore, The Answer ===> There must be 800 Million people that are in the Labor Force/Market.
Hope that helps!!!! -P- : )