SOLUTION: in a school 60 boys made an average score of 55 and 40 girls made an average score of 45.what is the overall average score?
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Question 868422: in a school 60 boys made an average score of 55 and 40 girls made an average score of 45.what is the overall average score? Found 2 solutions by JLJL, ewatrrr:Answer by JLJL(8) (Show Source):
You can put this solution on YOUR website! Take note of the formula to calculate average as follow.
(Total number of Score)/(Total number of students) = Average Score
For boys,
(Total Number of Boy Score)/60 = 55
Total Number of Boy Score = 55 X 60
Total Number of Boy Score = 3300
For Girls,
(Total Number of Girl Score)/40 = 45
Total Number of Girl Score = 45 X 40
Total Number of Girl Score = 1800
Total number of Score for both Boys and Girls = 3300 + 1800
Total number of Score for both Boys and Girls = 5100
Knowing that The total number of boys and girls students = 60 + 40 = 100 students
Thus,
Overall average score = (Total number of Boys and Girls Score)/(Total Number of Boys and Girls)
Overall average score = 5100/100
Overall average score = 51
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