If selling price of 80 articles is equal to the cost price of 100 articles, then find the gain percentage.
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → 25%
Gain per cent is always worked out on the cost price of the articles sold, here the cost of the 80 articles.
Assuming the cost price of one article to be Rs. 1:
Selling price of 80 articles \(=\) cost price of 100 articles \(=\) Rs. 100
Cost price of the 80 articles \(=\) Rs. 80
Gain \(=100-80=\) Rs. 20
Gain per cent \(\displaystyle=\frac{20}{80}\times100=25\%\)