SOLUTION: 25 students average 84 on a test. Another group of 20 students averages 66. Find the overall average.
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Question 961700: 25 students average 84 on a test. Another group of 20 students averages 66. Find the overall average.
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
The total scores of the first group:
The total scores of the second group:
The total scores of both:
Now divide by the total number of students :
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