SOLUTION: One of Mr. Millett's math class has 20 students in it. On a test day 4 students were absent so only 16 students wrote the exam. The next class Mr. Millett returned the test and ann
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Question 1024170: One of Mr. Millett's math class has 20 students in it. On a test day 4 students were absent so only 16 students wrote the exam. The next class Mr. Millett returned the test and announced that the mean of the scores for the 16 students was 72 points. Two days later, after the 4 absent students had taken the exam, Mr. Millett announced that the mean of the test had risen to 76 points. What was the mean score on the exam for the 4 sick students? Answer by Fombitz(32388) (Show Source):
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So the sum of the scores of the 16 was,
.
.
The sum of the scores of the all 20 was,
.
.
So then the sum of scores of the absent 4 was,
And the mean,
