AMC 8 1987 Problem 23

AMC8 1987 年第 23 题

统计与数据图表★★★☆☆

The table below gives the 1980 U.S. population for each of the four geographic regions and for each of two ethnic groups. To the nearest percent, what percent of the U.S. Black population lived in the South?

下表给出了 1980 年美国四个地理区域和两个族裔的人口。取整到最近的百分比，美国黑人人口中有百分之多少居住在南方？

A.20%
B.25%
C.40%
D.56%
E.80%

正确答案 · Correct Answer

解析 · Solution

Solution 1

The total U.S. Black population was 5+5+15+2=27 million. So

\displaystyle \frac{15}{27} = \frac{5}{9} \approx 56\%

of the U.S. Black population lived in the South.

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