A person loses 20% when he sells an article for ₹230. What percentage will he gain, if he sells it for ₹339.25?

20 18 12 15

18

Selling price of article = 230 Loss% = 20% Cost price of the article =  80% of the CP = 23= 100% of the CP = 287.5 Final selling price = 339.25 Profit% = (339.25 - 287.5) × \(\frac{100}{287.5}\) = 18