SOLUTION: The average arithmetic mean of (k) scores is 20 . The average of 10 of these scores is 15. Find the average of the remaining scores in terms of (k)

Question 310586: The average arithmetic mean of (k) scores is 20 . The average of 10 of these scores is 15. Find the average of the remaining scores in terms of (k)
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
The average arithmetic mean of (k) scores is 20 .
The average of 10 of these scores is 15.
Find the average of the remaining scores in terms of (k)
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average = (total points)/(# of numbers)
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20 = (total pts)/k
total pts = 20k
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Average of 10 of the scores
pts = 10*15 = 150
--------------------------
Average of the remaining k-10 scores
ave = (20k-150)/(k-10)
============================
Cheers,
Stan H.

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