alleryసంఖ్య 30%తో పెరిగినప్పుడు 195 అవుతుంది. అసలు సంఖ్య:
A150
B140
C130
D160
Answer & Solution
Correct answer: A. 150
1. అసలు x అని ఉండనివ్వండి.
అప్పుడు x = 195లో x + 30%.
2. 1.30 * x = 195.
3. x = 195 / 1.30 = 150.
4. కాబట్టి అసలు సంఖ్య 150.
_Source: SSC CGL Quantitative Aptitude (Percentages), R.S. Aggarwal style and standard practice_
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