2007 AMC 8 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.

调查了 650650 名学生的意大利面偏好。选项包括千层面、意式肉卷、意式饺和意大利面。调查结果显示在条形图中。喜欢意大利面的学生人数与喜欢意式肉卷的学生人数之比是多少?

650650 students were surveyed about their pasta preferences. The choices were lasagna, manicotti, ravioli and spaghetti. The results of the survey are displayed in the bar graph. What is the ratio of the number of students who preferred spaghetti to the number of students who preferred manicotti?

25\dfrac{2}{5}

12\dfrac{1}{2}

54\dfrac{5}{4}

53\dfrac{5}{3}

52\dfrac{5}{2}

答案:E
知识点:数据与图表解读比与比例
难度评级:450
解答:

喜欢意大利面的学生有 250250 人,喜欢意式肉卷的学生有 100100 人。

比值为 250100=52. \dfrac{250}{100} = \dfrac{5}{2}.

所以正确答案是 E

There are 250250 students who preferred spaghetti and 100100 that preferred manicotti.

The ratio is therefore 250100=52. \dfrac{250}{100} = \dfrac{5}{2}.

Thus, E is the correct answer.

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