alleryایک امتحان میں 70% طلباء پاس ہوئے۔ اگر 90 طلباء ناکام ہو گئے تو طلباء کی کل تعداد معلوم کریں۔
A300
B250
C200
D350
Answer & Solution
Correct answer: A. 300
1. اگر 70% پاس ہوئے تو 30% فیل ہوئے۔
2. کل کا 30% = 90، تو کل = 90 * (100/30)۔
3. = 300۔
4. چنانچہ 300 طلباء نے امتحان دیا۔
_Source: SSC CGL Quantitative Aptitude (Percentages), R.S. Aggarwal style and standard practice_
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