Data Sufficiency

试题详情

题目:

All 48 seniors in a certain high school take one of two English classes. What is the average (arithmetic mean) height of the seniors in this school?
(1)   In the school, the average height of the seniors in the English class with the larger number of students is 70 inches.
(2)   In the school, the average height of the seniors in the English class with the smaller number of students is  of the average height of the seniors in the other English class.

选项:

答案:

E

提问:

the larger is 70,the smaller is 4/5 of 另一班,那(1+2)/48 不是就可以判断了吗?
评分: 0
浏览: 113

提问:

the larger is 70,the smaller is 4/5 of 另一班,那(1+2)/48 不是就可以判断了吗?
评分: 0
浏览: 113
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