Question

Richelle 班上有 $36$ 名学生，其中 $12$ 人喜欢巧克力派， $8$ 人喜欢苹果派， $6$ 人喜欢蓝莓派。剩下的学生中一半喜欢樱桃派，一半喜欢柠檬派。Richelle 用这些数据画扇形统计图时，樱桃派应占多少度？

Of the $36$ students in Richelle's class, $12$ prefer chocolate pie, $8$ prefer apple, and $6$ prefer blueberry. Half of the remaining students prefer cherry pie and half prefer lemon. For Richelle's pie graph showing this data, how many degrees should she use for cherry pie?

$10$

$20$

$30$

$50$

$72$

答案：D

知识点：数据与图表解读分数

难度评级：1190

解答：

喜欢樱桃派或柠檬派的学生数为其中一半喜欢樱桃派，即 $10 \div 2 = 5$ 人。 $36 - 12 - 8 - 6 = 10.$

樱桃派对应的角度为 $360^{\circ} \cdot \dfrac{5}{36} = 5 \cdot 10^{\circ} = 50 ^{\circ}.$

所以正确答案是 D。

The number of students that prefer cherry or lemon pie is $36 - 12 - 8 - 6 = 10.$ Half of these like cherry pie, which is $10 \div 2 = 5.$

The number of degrees for cherry pie would then be $360^{\circ} \cdot \dfrac{5}{36} = 5 \cdot 10^{\circ} = 50 ^{\circ}.$

Thus, D is the correct answer.

2001 AMC 8 第 13 题

答案：D

难度评级：1190

解答：

其他年份的第 13 题