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An article bought for 400 is sold for 500. The profit per cent is:
A20%
B30%
C25%
D40%
Answer & Solution
Correct answer: C. 25%
1. The profit in rupees is 500 - 400 = 100.
2. Profit per cent is always taken on the cost price.
3. So it is 100 / 400 x 100.
4. That gives 25 per cent.
5. Dividing by the sale price would give 20 per cent, which is the standard trap on this question.
_Source: NCERT Class 8 Maths, Ch 7 'Comparing Quantities', S7.1 Recalling Ratios and Percentages_
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