SOLUTION: The average of 2,7,6 and x is 5 and the average of 18,1,6, x and y is 10. What is the value of Y?

Algebra ->  Average -> SOLUTION: The average of 2,7,6 and x is 5 and the average of 18,1,6, x and y is 10. What is the value of Y?      Log On


   

Question 843964: The average of 2,7,6 and x is 5 and the average of 18,1,6, x and y is 10. What is the value of Y?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
The average is the sum of the values divided by the number of values.
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%282%2B7%2B6%2Bx%29%2F4=5
15%2Bx=20
Now solve for x
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%2818%2B1%2B6%2Bx%2By%29%2F5=10
25%2Bx%2By=50
Use your value of x from before and now solve for y