Last Updated on May 11, 2023
GMAT OFFICIAL GUIDE DS
Solution:
We are given that there are 200 students and 8 cultural performances. We need to determine the average number of students attending each cultural performance. Thus, we need to know the total attendance of the 8 performances. For example, if we know the total attendance of the 8 performances is 1,000, then the average number of students per performance is 1,000/8 = 125.
Statement One Alone:
Last school year, each student attended at least one cultural performance.
Although we know that each student attended at least one cultural performance, we do not know the total attendance at the 8 performances, and thus we cannot determine the average number of students per performance. Statement one alone is not sufficient to answer the question.
Statement Two Alone:
Last school year, the average number of cultural performance attended per student was 4.
Since the average number of cultural performances per student was 4 and there were 200 students, the total attendance at the 8 performances was 200 x 4 = 800, and thus the average number of students per performance was 800/8 = 100.
Answer: B
