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April 18, 2015

April 18, 2015

Posted by **danny** on Monday, March 16, 2009 at 3:02pm.

- math -
**PsyDAG**, Tuesday, March 17, 2009 at 10:06pmLet x = average (mean) age of three friends. Mean = sum of scores (ages) divided by the number of scores.

(16 + 13 + 3x)/5 = 15

16 + 13 + 3x = 75

3x = 75 - 29 = 46

x = 15 1/3

I hope this helps. Thanks for asking.

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