2008 AMC 10A 第 8 题
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所有题目均经美国数学协会(MAA)官方合法授权使用。
8.
Heather 比较两家商店中一台新电脑的价格。A 店在标价基础上打 折后再返还 ,B 店在相同标价基础上打 折但没有返还。Heather 在 A 店购买比在 B 店购买节省 。这台电脑的标价是多少美元?
Heather compares the price of a new computer at two different stores. Store A offers off the sticker price followed by a rebate, and store B offers off the same sticker price with no rebate. Heather saves by buying the computer at store A instead of store B. What is the sticker price of the computer, in dollars?
小提示:
设标价为 ,写出两家商店的最终价格。
Let be the sticker price and write each store’s final price
大提示:
A 店价格为 ,B 店价格为 ,且 A 店便宜 。
Store A costs and store B costs with A cheaper by
解答:
设标价为 。Heather 在 A 店支付 ,在 B 店支付 。
因为 A 店便宜 ,解得 ,所以 。
所以正确答案是 A。
Let be the sticker price. Heather pays at store A and at store B.
Since store A is cheaper, which gives so
Thus, the correct answer is A.
其他年份的第 8 题
- 2000 AMC 10
- 2001 AMC 10
- 2002 AMC 10A
- 2002 AMC 10B
- 2003 AMC 10A
- 2003 AMC 10B
- 2004 AMC 10A
- 2004 AMC 10B
- 2005 AMC 10A
- 2005 AMC 10B
- 2006 AMC 10A
- 2006 AMC 10B
- 2007 AMC 10A
- 2007 AMC 10B
- 2008 AMC 10B
- 2009 AMC 10A
- 2009 AMC 10B
- 2010 AMC 10A
- 2010 AMC 10B
- 2011 AMC 10A
- 2011 AMC 10B
- 2012 AMC 10A
- 2012 AMC 10B
- 2013 AMC 10A
- 2013 AMC 10B
- 2014 AMC 10A
- 2014 AMC 10B
- 2015 AMC 10A
- 2015 AMC 10B
- 2016 AMC 10A
- 2016 AMC 10B
- 2017 AMC 10A
- 2017 AMC 10B
- 2018 AMC 10A
- 2018 AMC 10B
- 2019 AMC 10A
- 2019 AMC 10B
- 2020 AMC 10A
- 2020 AMC 10B
- 2021 AMC 10A Spring
- 2021 AMC 10B Spring
- 2021 AMC 10A Fall
- 2021 AMC 10B Fall
- 2022 AMC 10A
- 2022 AMC 10B
- 2023 AMC 10A
- 2023 AMC 10B
- 2024 AMC 10A
- 2024 AMC 10B
- 2025 AMC 10A
- 2025 AMC 10B