AMC8 1996

AMC8 1996 · Q19

AMC8 1996 · Q19. It mainly tests Percent, Averages (mean).

The pie charts at the right indicate the percent of students who prefer golf, bowling, or tennis at East Junior High School and West Middle School. The total number of students at East is 2000 and at West, 2500. In the two schools combined, the percent of students who prefer tennis is

右边的饼图显示了东初中和西中学的学生偏好高尔夫、保龄球或网球的百分比。东校总学生数 2000 人，西校 2500 人。两校合计，偏好网球的学生百分比是

(A) 30% 30%

(B) 31% 31%

(D) 33% 33%

(E) 34% 34%

Answer

Correct choice: (C)

正确答案：（C）

Solution

Answer (C): The first pie chart shows that 22% of 2000, or 440 students at East prefer tennis. The second chart shows that 40% of 2500, or 1000 students at West prefer tennis. Thus 1440 of the total of 4500 students prefer tennis. This gives $\frac{1440}{4500}=0.32$, or 32% that prefer tennis.

答案（C）：第一个饼图显示，在东校区的2000名学生中有22%（即440名）更喜欢网球。第二个图表显示，在西校区的2500名学生中有40%（即1000名）更喜欢网球。因此，总共4500名学生中有1440名更喜欢网球。由此可得 $\frac{1440}{4500}=0.32$，即喜欢网球的占32%。

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