SOLUTION: the average of a set of seven numbers is exactly 81 if one of the numbers is discarded the average of the remaining numbers is exactily 78 which number was discarded?
a.89
b.92
Algebra.Com
Question 313498: the average of a set of seven numbers is exactly 81 if one of the numbers is discarded the average of the remaining numbers is exactily 78 which number was discarded?
a.89
b.92
c.97
d.99
Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
7 (81) - x = 6 (78)
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