The difference between the selling prices of an article is ₹1440, when it is sold at 20% profit and 17.5% loss. What will be the selling price when it is sold at 15% profit?

₹4416

Direct concept = 

Loss% + Profit % = Difference in the selling price

17.5% + 20% = 1440

37.5% of the cost price = 1440

then, 100% of the cost price = 3840

so, selling price of the article at 15% gain = 115% of 3840 = 4416