SOLUTION: If the average (arithmetic mean) of eight numbers is 20 and the average of five of these numbers is 14, what is the average of the other three numbers?
A. 14
B. 17
C. 20
D. 3
Algebra.Com
Question 641858: If the average (arithmetic mean) of eight numbers is 20 and the average of five of these numbers is 14, what is the average of the other three numbers?
A. 14
B. 17
C. 20
D. 30
E. 34
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
If the average (arithmetic mean) of eight numbers is 20 and the average of five of these numbers is 14, what is the average of the other three numbers?
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Total points for the eight numbers: 8*20 = 160
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Total points for the five numbers: 5*14 = 70 points
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Average for the other three numbers: (160-70)/3 = 30
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Cheers,
Stan H.
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A. 14
B. 17
C. 20
D. 30
E. 34
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