1989 AMC 8 第 19 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。
19.
图中曲线表示冲浪城政府在 年的累计花费，单位为百万美元。例如，截至二月初约已花费 百万美元，截至四月底约已花费 百万美元。六月、七月和八月大约一共花费了多少百万美元？
The graph below shows the total accumulated dollars (in millions) spent by the Surf City government during For example, about million had been spent by the beginning of February and approximately million by the end of April. Approximately how many millions of dollars were spent during the summer months of June, July, and August?
小提示：
这是累计花费图，所以一段时间内的花费等于图上数值的增加量
Because the graph shows an accumulated total, the amount spent over a span of months is the increase in that total across the span
大提示：
读出六月开始附近和八月结束附近的累计值，然后相减
Read the height of the curve at the beginning of June and at the end of August, then subtract the two values
解答：
图显示的是累计花费，所以六月、七月、八月的花费等于这段时间累计值的增加量。
从图上看，六月开始时累计值略多于 百万美元，八月结束时略多于 百万美元，差约为 百万美元。
所以正确答案是 B。
The graph gives the total accumulated spending, so the amount spent during June, July, and August equals the accumulated total at the end of August minus the accumulated total at the beginning of June.
The curve is at a bit more than million at the beginning of June and a bit more than million by the end of August. The difference is about million.
Thus, the correct answer is B .
其他年份的第 19 题
- 1985 AMC 8
- 1986 AMC 8
- 1987 AMC 8
- 1988 AMC 8
- 1990 AMC 8
- 1991 AMC 8
- 1992 AMC 8
- 1993 AMC 8
- 1994 AMC 8
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