选择题
2013 AMC 8 Problem 12: Sandals Fair Special
At the 2013 Winnebago County Fair a vendor is offering a "fair special" on sandals. If you buy one pair at the regular price of $50, you get a second pair at a 40% discount, and a third pair at half the regular price. Javier buys three pairs. What percentage of the $150 regular price did he save?
2013 AMC 8 第12题 ：凉鞋展特价
在2013年温尼贝戈县博览会上，一位供应商正在提供凉鞋的“公平特价”。如果您以50 $的正常价格购买一对，您将以40 ％的折扣获得第二对，以正常价格的一半购买第三对。哈维尔买了三双。在150 $的正常价格中，他节省了多少百分比？
A.
25
B.
30
C.
33
D.
40
E.
45