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April 19, 2015

April 19, 2015

Posted by **Tarunima** on Sunday, July 20, 2014 at 9:58am.

average weight of b+c=43

average weight of a+c=50

what is the average of a,b,c

- algebra -
**Steve**, Sunday, July 20, 2014 at 3:47pmyou want (a+b+c)/3

(a+b)/2 = 45

(b+c)/2 = 43

(a+c)/2 = 50

Add them up and you have

(a+b+b+c+a+c)/2 = 45+43+50

(2a+2b+2c)/2 = 138

(a+b+c) = 138

(a+b+c)/3 = 46

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