1995 AMC 12 第 3 题

先试着解答 1995 AMC 12 第 3 题,然后核对你的答案与精心整理的解答,解答来自 LIVE by Po-Shen Loh。你也可以参加完整限时模拟考试、查看全部 1995 AMC 12 解答,或核对答案。

所有题目均经美国数学协会(MAA)官方合法授权使用。

3.

某家电在商店内的总价为 $99.99\$99.99。电视广告称,同一产品可分三次轻松付款,每次 $29.98\$29.98,另收一次性运费及手续费 $9.98\$9.98。从电视广告商处购买可节省多少钱?
The total in-store price for an appliance is $99.99.\$99.99. A television commercial advertises the same product for three easy payments of $29.98\$29.98 and a one-time shipping and handling charge of $9.98.\$9.98. How much is saved by buying the appliance from the television advertiser?
66 美分
66 cents
77 美分
77 cents
88 美分
88 cents
99 美分
99 cents
1010 美分
1010 cents
答案:B
知识点:decimal arithmeticunit prices
小提示:
将三次付款与一次性费用相加
Add all three payments and the one-time charge
大提示:
用店内价格减去广告总价,再将美元换算为美分
Subtract the advertised total from the in-store price and convert dollars to cents
解答:
广告总价为 3(29.98)+9.98=99.923(29.98)+9.98=99.92 美元。节省的钱为 99.99−99.92=0.0799.99-99.92=0.07 美元,即 77 美分。因此正确答案是 B。
The advertised total is 3(29.98)+9.98=99.923(29.98)+9.98=99.92 dollars. The savings is 99.99−99.92=0.0799.99-99.92=0.07 dollars, or 77 cents. Thus the correct answer is B.
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