2014 AMC 12A 第 2 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。
2.
在剧院，儿童票半价。 张成人票和 张儿童票共 。 张成人票和 张儿童票要花多少钱？
At the theater children get in for half price. The price for adult tickets and child tickets is How much would adult tickets and child tickets cost?
答案：B
小提示：
儿童票是成人票的一半，所以把所有票都换算成成人票。
A child ticket costs half an adult ticket, so measure everything in adult tickets
大提示：
张成人票花 ；再求 张成人票的费用。
adult tickets cost ; find the cost of adult tickets
解答：
儿童票半价，所以 张成人票和 张儿童票相当于 张成人票，因此一张成人票价格为 。
第二次购买相当于 张成人票，费用为 。
所以正确答案是 B。
Since a child ticket is half an adult ticket, adult and child tickets equal adult tickets, so one adult ticket costs
The second purchase equals adult tickets, costing
Thus, the correct answer is B.
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