Acme Manufacturing has been restricted to 100 employees in the building at one time. Throughout the day, twenty employees go on break each hour as twenty other employees return from break.

2. Are the employees who move in and out of the building each hour the same people? Explain your answer.

No, the employees who move in and out of the building each hour are not necessarily the same people. This is because the statement mentions that twenty employees go on break each hour and twenty other employees return from break. This implies that the employees going on break are different from the ones returning from break. Therefore, there is a rotation of employees going in and out of the building throughout the day.