In a class of 20 students, the average (arithmetic mean) score on a test is 84 points. If 6 students each scored 100 points and 4 students each scored 50 points, what is the average of the scores of the remaining students?
2 answers
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average is 84, so the total is 20(84) or 1680 points
points of 6 students at 100 = 600
points of 4 students at 50 = 200
remaining points = 1680 - 600 - 200 = 880
average of those 10 students = 880/10 = 88
points of 6 students at 100 = 600
points of 4 students at 50 = 200
remaining points = 1680 - 600 - 200 = 880
average of those 10 students = 880/10 = 88