GMAT考试

【单选题】The incomplete table above shows a distribution of scores for a class of 25 students. If the average (arithmetic mean) score for the class is 83, what score is missing from the table

Score	Number of students
92	4
91	6
	3
83	7
71	5

A、75
B、77
C、81
D、84
E、86

网考网参考答案：A
网考网解析：
If the average score for the class is 83, then the sum of all 25 students’ scores be 83×25=2,075. The sum of the scores for the 22 students for whom we have scores is 368+546+581+355=1,850. So the three students’ scores must make up the difference between 2,075 and 1,850; 2,075-1,850=225; 225/3=75. document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>