A house wife saved $2.75 in buying an item on sale. If she spent $20 for the item, approximately how much percent she saved in the transaction?
Choose the correct choice from the following
A) 8 %
B) 9 %
C) 10 %
D) 11 %
E) 12 %

Rationale: "actual price = 20 + 2.75 = $ 22.75 saving = 2.75 / 22.75 * 100 = 12 % approximately answer is e"
Answer: E