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UPSC 1998: Out of the three annual examinations, each with a total of 500 marks, a student secured average marks of 45 % and 55 % in the first and second annual examinations. To have an overall average of 60 %, how many marks does the student need to secure in the third annual examination?
(a)450
(b)400
(c)350
(d)300
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Not attemptedCorrect Answer: (b) 400
Marks obtained: first exam = 0.45 × 500 = 225, second = 0.55 × 500 = 275. For an overall 60 % on 1500 marks, total needed = 900; third-exam marks = 900 − 500 = 400. Therefore option (b) is correct. ([scribd.com](https://www.scribd.com/document/731910048/1998))
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Frequently Asked Questions
What is the correct answer to this UPSC 1998 Science & Technology question?▼
The correct answer is option (b): 400. Watch the detailed video explanation in our Sherlocking Prelims course on UnlockIAS.
Which year was this Quantitative Aptitude question asked in UPSC Prelims?▼
This question was asked in UPSC CSE Prelims 1998, GS Paper 1, as Question 136. It falls under Science & Technology > Quantitative Aptitude.
What is the difficulty level of this UPSC question?▼
This question is rated "easy". It tests basic recall and most well-prepared aspirants should answer it correctly.
How many UPSC Prelims questions have been asked from Quantitative Aptitude?▼
UPSC has asked 178 questions from Quantitative Aptitude (under Science & Technology) across multiple years. Visit the topic page to see the full list and year-wise trends.