If a shopkeeper wants to give 20% discount on the cost price of the article, then he has to sell it for Rs.400. If he sells it at Rs.520, then his gain percentage is:
Show answer & explanation
Correct answer: C
Explanation
The correct answer is Option 3 i.e. 4%.
Let the actual price be x
According to the question
⇒ 80% of x = 400
⇒ x = 400/80 × 100 = 500
Gain = (520 - 500)/500 × 100 = 4%