SOLUTION: If the average of six numbers is 18 and the average of three of the numbers is 15 then what is the sum of the remaining three numbers ? Need help on how to set this up and how to f

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Question 100174This question is from textbook
: If the average of six numbers is 18 and the average of three of the numbers is 15 then what is the sum of the remaining three numbers ? Need help on how to set this up and how to figure it...Thanks so much..This question is from textbook

Answer by scott8148(5880) About Me  (Show Source):
You can put this solution on YOUR website!
6*18=108 ... 3*15=45

the sum of the remaining numbers is the difference

x+(3*15)=6*18