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January 31, 2015

January 31, 2015

Posted by **Steve** on Friday, June 3, 2011 at 2:51am.

- Algebra -
**Anonymous**, Friday, June 3, 2011 at 4:36ama=first score

b=second score

b=a-11

(a+b)/2=79

a+a-11=2*79

2a-11=158

2a=158+11

2a=169 Divide with 2

a=169/2= 84.5

b=a-11

b=84.5-11

b=73.5

(a+b)/2= (84.5+73.5)/2=158/2=79

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