ITC sells one product at a profit of 20% another at a loss of 20% at the same selling price. , If SP of each article be Rs. 200, what is the amount of loss?

Loss % = ( common gain or loss / 10 )² % = (20 / 10)² % = 4%Now assume total CP of both articles be x, then SP = 0.96x = 400 x = 400 / 0.96 = CPloss = 4% of CP = (4 / 100) X (400 / 0.96) = Rs. 16.66