Final Answer:
The percentage of people in attendance who are not employees or employee spouses is C. 25%.
Step-by-step explanation:
Let's denote the total attendance as Given that 1/2 of the attendees are employees, the number of employees in attendance is times
Additionally, employees' spouses constitute 1/3 of the attendance, so the number of employees' spouses is
The total number of employees and their spouses is \(\frac{1}{2} \times T +
To find the percentage of people who are not employees or employee spouses, we subtract this from the total attendance and calculate the percentage:
Now, to express this as a percentage, we use the formula:
Therefore, the correct answer is C. 25%.