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September 21, 2014

September 21, 2014

Posted by **Grace** on Tuesday, August 7, 2012 at 9:50pm.

- Math -
**Reiny**, Wednesday, August 8, 2012 at 8:47amsum of all 10 numbers is 100

sum of one set of 5 numbers is -25

so the sum of the other set of 5 numbers must be 125

(125 + (-25) = 100 )

and the average of that second set of 5 numbers must be 125/5 or 25

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