What minimum marks is required to pass an examination?

Statement I: Pranabh secured 51% marks in the examination and was declared failed by 20 marks. Narendra secured 54% marks in the examination and got 23 marks more than the minimum pass marks.

Statement II: Pranabh secured 725 marks in 6 subjects.

Statement III: A students will be declared passed if he secures 28.5% of the total marks.

From I According to the question, 51% + 20 = 54% - 23 43 = 3% ∴ 3% = 43 ∴ 51% = 43/3 × 51 = 731 Pass marks = 731 + 20 = 751 Hence, statement I alone is sufficient to answer the question. But II and III are not sufficient to answer the question. But II and III are not sufficient to answer the question because we need more information to find the pass marks.

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- What is the average salary of 10 officers , if a clerk’s salary is Rs. 15,000? Statement I: The total salary of 10 officers and 5 clerk is Rs. 4,25,000. Statement II: A clerk’s salary is 42% of the average salary of 10 officers.
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- There are two cylindrical rollers - bigger and smaller. How many rotations will the bigger roller take to flatten a stretch of land (X)? Statement I: The respective ratio of the radii of the bigger and the smaller roller is 7 : 3. Both the rollers are of the same length. Statement II: The smaller takes 126 rotations to flatten the stretch of land (X).
- What is the monthly salary of Amit? Statement I. Amit spends one-third of his salary on household expenses, one –fourth on travel expenses, one – fifth on rent and deposit it’s the rest in a bank. Statement II. His monthly deposits in the bank amount to Rs. 13,000. Statement III. The ratio of his salary to his wife’s is 6 : 1. His wife spends one – fifth of her salary on travel expenses, and the remaining Rs. 8,000 on her cosmetic goods.
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