SOLUTION: the mean age of cousins in a family is 16.25. the cousins ages are 12,15,20 and x what is the age of x

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Question 1107600: the mean age of cousins in a family is 16.25. the cousins ages are 12,15,20 and x what is the age of x
Answer by AnlytcPhil(1806) About Me  (Show Source):
You can put this solution on YOUR website!
To find the mean age of the 4 quantities, 12,15,20 and x, we
divide their sum by 4 and set that equal to the given mean:

%2812%2B15%2B20%2Bx%29%2F4%22%22=%22%2216.25

Now solve for x.

Edwin