A house wife saved $2.50 in buying an item on sale. If she spent $25 for the item, approximately how much percent she saved in the transaction?	Choose the most appropriate option:
A) 8 %  B) 9 %  C) 10 %  D) 11 %  E) 12 %

Rationale: actual price = 25 + 2.50 = $ 27.50 saving = 2.50 / 27.50 * 100 = 100 / 11 = 9 % approximately answer is b
Answer: B