AMC8 2005
AMC8 2005 · Q2
AMC8 2005 · Q2. It mainly tests Percent, Arithmetic misc.
Karl bought five folders from Pay-A-Lot at a cost of $2.50 each. Pay-A-Lot had a 20%-off sale the following day. How much could Karl have saved on the purchase by waiting a day?
Karl 在 Pay-A-Lot 买了五个文件夹，每个 2.50 美元。第二天 Pay-A-Lot 举行 20% 折扣促销。如果 Karl 等一天再买，他能节省多少钱？
(A)
$1.00
$1.00
(B)
$2.00
$2.00
(C)
$2.50
$2.50
(D)
$2.75
$2.75
(E)
$5.00
$5.00
Answer
Correct choice: (C)
正确答案：（C）
Solution
(C) Karl spent $5 \times \$2.50 = \$12.50$ on the folders. If he had purchased the folders a day later, he would have saved $20\%$ of this total, or $0.20 \times \$12.50 = \$2.50$.
(C) 卡尔在文件夹上花了 $5 \times \$2.50 = \$12.50$。如果他晚一天购买这些文件夹，他就能节省这笔总额的 $20\%$，也就是 $0.20 \times \$12.50 = \$2.50$。
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