A shopkeeper marks up the price of his goods by 20% and gives a discount of 10% to the customer. He also uses a 900g weight instead of 1Kg weight. Find his profit percentage.
Choose the correct choice
A) 8%
B) 12%
C) 20%
D) 30%
E) None of these
Let the 20%.P of 1000g of goods be Rs 1,000   Market price = Rs 1,200   Selling price = Rs 1,200 x 0.9 = Rs 1,080 (after discount of 10% )   If Rs 1080 is the selling price of 900g of goods ( as he cheats of 10 % while selling )   20%.P of 900g = Rs 900   Profit = Rs 180   Therefore, Profit % = (180/900 ) x 100 = 20 %   ANSWER:20%
<result>C</result>
A shopkeeper marks up the price of his goods by 20% and gives a discount of 10% to the customer. He also uses a 900g weight instead of 1Kg weight. Find his profit percentage.