Passing threshold and shortfall: To pass, 296 marks are required. A student secured 222 marks and is declared failed by 10% of the maximum marks. What are the maximum aggregate marks?
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A830
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B810
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C780
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D740
Answer
Correct Answer: 740
Explanation
Introduction / Context:This problem combines a fixed pass mark with a stated shortfall expressed as a percentage of the total maximum. The key is interpreting “failed by 10% marks” as being short by 10% of maximum marks, not 10% of the pass mark.Given Data / Assumptions:
- Pass marks = 296.
- Obtained = 222.
- Shortfall = 296 − 222 = 74.
- Shortfall equals 10% of maximum M.
Concept / Approach:Set 0.10M = 74 and solve for M. The pass threshold is provided only to determine the shortfall. Once M is found, no further adjustments are needed.
Step-by-Step Solution:
Shortfall = 296 − 222 = 74.74 = 10% of M ⇒ 0.10M = 74.M = 74 / 0.10 = 740.Verification / Alternative check:10% of 740 = 74, which matches the stated shortfall; the student is indeed 74 below the required 296.
Why Other Options Are Wrong:
- 830, 810, 780: None make 10% equal to 74, so they cannot satisfy the “failed by 10%” condition.
Common Pitfalls:Interpreting “failed by 10%” as 10% of the pass mark (296), which would give 29.6—incorrect by the problem’s phrasing that references maximum marks.
Final Answer:
740