SOLUTION: Mr. Taylor gave his class a test the day after spring break. The average score for all students was 80. The average score for those who passed was 84 and for those that failed was

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Question 1128133: Mr. Taylor gave his class a test the day after spring break. The average score for all students was 80. The average score for those who passed was 84 and for those that failed was 60. If there were 60 students in the class, how many failed?
Thank you for your help
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Mr. Taylor gave his class a test the day after spring break. The average score for all students was 80. The average score for those who passed was 84 and for those that failed was 60. If there were 60 students in the class, how many failed?
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Equations:
P + F = 60
84P + 60F = 80*60
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Modify to solve for F::
84P + 84F = 84*60
84P + 60F = 80*60
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24F = 4*60
F = 10 (# who failed)
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Cheers,
Stan H.
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