Suppose the cost price of A as well as B is ₹ 100. Then, ATQ: Selling Price of A = 100 + 40 = 140 And Selling Price of B = 140 – (140 × 0.2) = 140 – 28 = 112 Total selling price = 140 + 112 = ₹ 252 Total Cost price = ₹ 200 Hence by taking cost price = ₹ 100. Total profit = ₹ 52. Total profit will be ₹ 156 when cost price = (100/52) × 156 = ₹ 300