SOLUTION: Three students were absent when the remaining 21 students in the class took a test on which their average score was 77. then the three students took the test later, their scores we

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Question 853895: Three students were absent when the remaining 21 students in the class took a test on which their average score was 77. then the three students took the test later, their scores were 69, 62, and 91. Ta king these grades into account, what is the new class average on the test?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 
Hi,
%2869+%2B+62+%2B+91+%2B+21%2A77%29%2F24 = New Average