alleryપરીક્ષામાં 70% વિદ્યાર્થીઓ પાસ થયા. જો 90 વિદ્યાર્થીઓ નાપાસ થયા હોય, તો કુલ વિદ્યાર્થીઓની સંખ્યા શોધો.
A300
B250
C200
D350
Answer & Solution
Correct answer: A. 300
1. 70% પાસ થયા તો 30% નાપાસ થયા.
2. કુલ = 90 ના 30%, તેથી કુલ = 90 * (100/30).
3. = 300.
4. તો 300 વિદ્યાર્થીઓએ પરીક્ષા આપી હતી.
_Source: SSC CGL Quantitative Aptitude (Percentages), R.S. Aggarwal style and standard practice_
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