A house wife saved $4 in buying an item on sale. If she spent $28 for the item, approximately how much percent she saved in the transaction?	Pick
A) 8 %
B) 13 %
C) 10 %
D) 11 %
E) 12 %

Rationale: "actual price = 28 + 4 = $ 32 saving = 4 / 32 * 100 = 13 % approximately answer is b"
Answer: B