Mathematics · Averages & Data Sufficiency
There are three classes 'A', 'B', and 'C'. The average number of students in 'A', 'B', and 'C' is 180. Find the number of students in 'B' is how much percent more or less than the total number of students in 'A' and 'C' combined. Statement I: The number of students in 'B' is 'k' more than the number of students in 'C' and the number of students in 'C' is 'k' more than that in 'A'. Statement II: The difference between the number of students in 'A' and 'B' is 120.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Both together are not sufficient.
- 2Either I alone or II alone is sufficient.
- 3Statement I alone is sufficient while Statement II alone is not sufficient.✓
- 4Statement II alone is sufficient while Statement I alone is not sufficient.
Correct answer
Statement I alone is sufficient while Statement II alone is not sufficient.
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