- Let CP be the cost price of one toy and L be the labelled price (marked price) of one toy. - Total number of toys = 12. - Total cost price = 12 CP. - The shopkeeper makes a total SP of Rs. 2112 and a profit of 10%. - Total SP = Total CP (1 + Profit percentage) - 2112 = 12 CP (1 + 10/100) - 2112 = 1920 - Total CP = 1920. CP per toy = 1920 / 12 =