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 or selling 1 kilogram. Find the percentage profit earned by the shopkeeper?  Pick one.
A) 20%	B) 25%	C) 32%	D) 46.66%	E) 50%
Solution: While buying,   He buys 1100 gram instead of 1000gram.   Suppose he bought 1100 grams for Rs. 1000.   While selling,   He sells only 900 grams when he takes the money for 1 kg.   Now, according to the problem,   he sells at a 8% profit (20% markup, 10% discount).   Hence, his selling price is Rs. 1080 for 900 grams.   Now,   1100grams for Rs. 1000   Hence, 1188 grams for Rs. 1080   Selling: 900 grams for Rs. 1080.   Hence, % profit = 288/900 = 32%.   (using goods left by goods sold formula)   Answer: Option 32%
<result>C</result>
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 or selling 1 kilogram. Find the percentage profit earned by the shopkeeper?