In an​ economy, the​ working-age population is 100

100 million. Of this​ total,  

75

75 million workers are employed.

4

4 million workers are unemployed.

16

16 million workers are not available for work​ (homemakers, full-time​ students, etc.).

3

3 million workers are available for work but are discouraged and thus are not seeking work.

2

2 million workers are available for work but are not currently seeking work due to transportation or childcare problems.

The unemployment rate in this economy is ?