SOLUTION: If the average of 27-x, x-8, and 3x+11 is y, what is the average of 2y and {{{2y/3}}} in terms of x?

Question 972224: If the average of 27-x, x-8, and 3x+11 is y, what is the average of 2y and in terms of x?
Answer by Edwin McCravy(20056) (Show Source): You can put this solution on YOUR website!
If the average of 27-x, x-8, and 3x+11 is y, what is the average of 2y and in terms of x?
...the average of 27-x, x-8, and 3x+11 is y...

To average them, we add them and divide by 3, then set equal to y:



Simplify

...what is the average of 2y and in terms of x?...

First we average  and , then we'll substitute 10+x
for y:

To average them, we add them and divide by 2:



Simplify by Multiplying top and bottom by 3:









Now we substitute 10+x for y



Edwin

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