SOLUTION: On a certain test, a class with 10 students had an average score of 60 and a class with 15 students had an average score of 80. What was the average score on that test for the 25 s

SOLUTION: On a certain test, a class with 10 students had an average score of 60 and a class with 15 students had an average score of 80. What was the average score on that test for the 25 s

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Question 714987: On a certain test, a class with 10 students had an average score of 60 and a class with 15 students had an average score of 80. What was the average score on that test for the 25 students?
Answer by checkley79(3341) (Show Source): You can put this solution on YOUR website!
[(10*60)+(15*80)]/(10+15)
(600+1200)/25
1800/25=72 ANS. FOR THE OVERALL AVERAGE.
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