A person saved $10 in buying an item on sale. If he spent $100 for the item, approximately how much percent he saved in the transaction?  Pick one
A) 8 %  B) 10 %  C) 2 %  D) 5 %  E) 6 %

Rationale: actual price = 100 + 10 = $ 110 saving = 10 / 110 * 100 = 100 / 11 = 10 % approximately answer is b
Answer: B