AMC8 2013
AMC8 2013 · Q2
AMC8 2013 · Q2. It mainly tests Fractions, Percent.
A sign at the fish market says, “50% off, today only: half-pound packages for just $3 per package.” What is the regular price for a full pound of fish, in dollars?
鱼市上的一个标志写着：“今天仅限 50% 折扣：半磅包装仅售每包 3 美元。”一磅鱼的常规价格是多少美元？
(A)
6
6
(B)
9
9
(C)
10
10
(D)
12
12
(E)
15
15
Answer
Correct choice: (D)
正确答案：（D）
Solution
50% off the price of half a pound of fish is \$3, so 100%, the regular price, of a half pound of fish is \$6. If half a pound of fish costs \$6, then a whole pound of fish is $\boxed{\textbf{(D)}\ 12}$ dollars.
半磅鱼打 50% 折扣后是 3 美元，所以 100%，即半磅鱼的常规价格，是 6 美元。如果半磅鱼成本 6 美元，那么一磅鱼就是 $\boxed{\textbf{(D)}\ 12}$ 美元。
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