AMC 8 2002 Problem 6
AMC8 2002 年第 6 题
工程问题★★☆☆☆
A birdbath is designed to overflow so that it will be self-cleaning. Water flows in at the rate of 20 milliliters per minute and drains at the rate of 18 milliliters per minute. Which one of these graphs shows the volume of water in the birdbath during the filling time and continuing into the overflow time?
一种水盆设计为溢流式，以便能够自动清洗。水以每分钟 20 毫升的速度流入，以每分钟 18 毫升的速度排出。其中某一张图显示了从灌水开始，一直持续到不断溢出这段时间内，水盆中的水量。这张图是下面哪一个? Problem 7 The students in Mrs. Sawyer's class were asked to do a taste test of five kinds of candy. Each student chose one kind of candy. A bar graph of their preferences is shown. What percent of her class chose candy E? Sawyer 夫人班上的学生被要求对五种糖果进行口味测试。每个学生都选了一种糖果。下面的条形图显示了他们的个人喜好。她班有百分之几的学生选择了糖果 E? Number of students | 学生数量 Kind of candy | 糖果种类 Juan's Old Stamping Grounds Problems 8,9 and 10 use the data found in the accompanying paragraph and table: Juan 的集邮爱好问题 8、9 和 10 使用的是下面段落和表格中的数据 Juan organizes the stamps in his collection by country and by the decade in which they were issued. The prices he paid for them at a stamp shop were: Brazil and France, 6 cents each, Peru 4 cents each, and Spain 5 cents each. (Brazil and Peru are South American countries and France and Spain are in Europe.) Juan 按照国家和发行年代来给他的邮票分类。他在一家邮票店为它们支付的价格是：巴西和法国的邮票，每张 6 美分，秘鲁的每张 4 美分，西班牙的每张 5 美分。（巴西和秘鲁是南美国家，法国和西班牙在欧洲。） Problem 8 How many of his European stamps were issued in the '80s? 他的欧洲邮票有多少张是在 80 年代发行的？
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正确答案 · Correct Answer
A
解析 · Solution
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