Let the cost price of articles ‘A’ and ‘B’ be Rs. 5y and Rs. y respectively Sum of cost price of articles ‘A’ and ‘B’ = 1200 × 2 = 2400 => 5y + y = 2400 => 6y = 2400 => y = 400 So, cost price of article ‘A’ = 5y = Rs. 2000 Cost price of article ‘B’ = y = Rs. 400 Selling price of article ‘A’ = 2000 × (127/100) = Rs. 2540 Selling price of article ‘B’ = 400 + 110= Rs. 510 So, average selling price of given two articles = (2540 + 510) ÷ 2 = Rs. 1525