Answer:
(a) 3.7
(b) 3.7
Step-by-step explanation:
The unemployment rate is calculated as the ration of unemployed workers over the labor force. The labor force is the total number of employed plus unemployed workers:
![Unemployment\,Rate=(Unemployed\,Workers)/(Labor\,Force)=(Unemployed\,Workers)/(Employed\,Workers+Unemployed\,Workers)](https://img.qammunity.org/2020/formulas/business/college/j8iumlu6jvzsuarkq488qhd07z36i6iknj.png)
Then if there were 155 million people in the labor force and 7.4% where unemployed that means that 11.47 million people where unemployed
![0.074=(Unemployed\,Workers)/(155)](https://img.qammunity.org/2020/formulas/business/college/lay2bgqbyf0txfciywjlq5bkq8ecj7mnyd.png)
![Unemployed\,Workers=0.074*155=11.47](https://img.qammunity.org/2020/formulas/business/college/tll5la1wnrbapsxau6ythc7trcxpxb5i2d.png)
If unemployment rate would have been 5% we have
![Unemployed\,Workers=0.05*155=7.75](https://img.qammunity.org/2020/formulas/business/college/5yygkxb8xpgkt7yxzkhkoy0mxuvdgkwexz.png)
That means that 3.72 million fewer unemployed workers. Since Labor Force is the sum of unemployed and employed workers. The reduction in unemployment implies that they were now employed .