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What is the total of the number of students in Section I taken across all classes…

Paper 1 · Data Interpretation UGC NET December 2022 (13.03.2023) Shift-II (Home Science)
Passage
Table 1 shows the percentage distribution of the number of students studying in six Law Colleges A to F, and Table 2 shows the percentage distribution of students across three sections I, II and III of each of the five classes (1st to 5th year) of College D. The college-wise shares in Table 1 are A eight and one third percent, B 10 percent, C 20 percent, D sixteen and two thirds percent, E 30 percent and F 15 percent. In Table 2 the section I, II and III percentages by class are: 1st year 30, 35 and 35; 2nd year 50, 25 and 25; 3rd year 20, 55 and 25; 4th year 45, 35 and 20; and 5th year 35, 30 and 35. There are 1080 students in College C, and each class of College D has the same number of students. Based on the data, answer the questions.
What is the total of the number of students in Section I taken across all classes of College D? (Take each class of College D as 900 students, as in the source solution.)
A320
B324 ✓ Correct
C250
D252
Correct answer: (B) 324 — The answer is 324.
Explanation
The answer is 324.
Section I percentages across the classes are 30, 50, 20, 45 and 35.
Applying each to 900 gives 270, 450, 180, 405 and 315.
The sum of these values is 1620.
The source averages this over the five classes.
So 1620 divided by 5 gives 324.
So the answer is 324.

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