A dishonest dealer marks up the price of his goods by 20% and gives a discount of
10% to the customer. Besides, he also cheats both his supplier and his buyer by
100 grams while buying and selling 1 kilogram. Find the percentage profit earned by
the shopkeeper.
(A) 30 (B) 35 (C) 32 (D) 29

• Ans C:32%
  
  The dealer doesn't actually give his customer a discount. He charges 90% of the price for 90% of the product. Thus he still makes a 20% profit over the supplier price. Let C be the supplier price for 1 kg of product. The dealer then gets 1.1kg for the price C or 1kg for 1011C. He sells this 1kg for 1.2C. The profit margin is 1.2C-1011C divided by the dealer price, 1011C, comes out to be 32%.
• 10 years agoHelpfull: Yes(1) No(3)