By selling an article for ₹20, a dealer makes a profit of 10%. By how much should he increase his selling price (in ₹, rounded off to two decimal place) so as to make a profit of 30%?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 3.64.
CP = 20 × 100/(100 + 10)
⇒ 200/110 = 200/11
Now, for profit = 30%, SP = (200/11) × 130/100
⇒ 260/11 = 23.64
Required difference = 23.64 - 20 = 3.64