A shop owner professes to sell his articles at certain cost price but he uses false weights with which he cheats by 10% while buying and by 10% while selling. What is his percentage profit?
Choose one.
A) 10.22%
B) 20.22%
C) 21.22%
D) 22.22%
E) Can't be calculated
The owner buys 100 kg but actually gets 110kg;   The owner sells 100 kg but actually gives 90kg;   Profit: (110-90)/90*100=~22.22%   Answer: 22.22%.
<result>D</result>
A shop owner professes to sell his articles at certain cost price but he uses false weights with which he cheats by 10% while buying and by 10% while selling. What is his percentage profit?