AMC 8 2023 Problem 14
AMC8 2023 年第 14 题
特殊数与不定方程★★★☆☆
Nicolas is planning to send a package to his friend Anton, who is a stamp collector. To pay for the postage, Nicolas would like to cover the package with a large number of stamps. Suppose he has a collection of 5-cent, 10-cent, and 25-cent stamps, with exactly 20 of each type. What is the greatest number of stamps Nicolas can use to make exactly $7.10 in postage? (Note: The amount $7.10 corresponds to 7 dollars and 10 cents. One dollar is worth 100 cents.)
计划将一个包裹寄给爱好集邮的朋友Anton．为了支付邮资，Nicolas准备在包裹上贴大量的邮票．假设他有5美分，10美分，25美分的邮票，每种邮票恰好各有20张. Nicolas最多可以使用多少张邮票来恰好支付$7.10的邮资？ (注意：金额$7.10是指7美元10美分, 1美元是100美分.)
- A.45
- B.46
- C.51
- D.54
- E.55
正确答案 · Correct Answer
E
解析 · Solution
解析整理中
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