If the cost-price of 18 articles is equal to the selling price of 15 articles, then find the gain percentage?
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → 20%
Gain per cent is worked out on the cost price. Comparing the same number of articles, 15, the selling price equals the cost of 18 articles.
Assuming the cost price of one article to be 1:
Cost price of 15 articles \(=15\)
Selling price of 15 articles \(=\) cost price of 18 articles \(=18\)
Gain \(=18-15=3\)
Gain per cent \(\displaystyle =\frac{3}{15}\times100=20\%\)