A shopkeeper labels the price of articles 20% above the cost price. If he allows 31.20 off on a bill of 312, find his profit per cent on the article?
Choose the correct answer:  A) 8  B) 12 1⁄3  C) 11 2⁄3  D) 8 1⁄3  E) None of these
Let the CP = 100 Marked price = 120   Discount = 312⁄31.2 × 1⁄100 = 10% = 12   SP = 120 – 12 = 108 Profit% = 108 – 100 = 8%   8nswer 8
<result>A</result>
A shopkeeper labels the price of articles 20% above the cost price. If he allows 31.20 off on a bill of 312, find his profit per cent on the article?