alleryIf the price of a book increases from Rs 80 to Rs 100, what is the percentage increase?
A15%
B25%
C20%
D30%
Answer & Solution
Correct answer: B. 25%
1. Increase = 100 - 80 = Rs 20.
2. Percentage increase = (increase / original price) * 100.
3. = (20 / 80) * 100.
4. = 25%.
5. So the price went up by 25%.
_Source: SSC CGL Quantitative Aptitude (Percentages), R.S. Aggarwal style and standard practice_
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