SOLUTION: If the mean of 8 scores is 5 and 1 score is added which changes the mean to 7 then what was the score that was added

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Question 808452: If the mean of 8 scores is 5 and 1 score is added which changes the mean to 7 then what was the score that was added
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
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If the mean of 8 scores is 5 and 1 score is added which changes the mean to 7 then what was the score that was added
:
Let x = the score that was added, now there are 9 scores
%288%285%29%2Bx%29%2F9= 7
multiply both sides by 9
40 + x = 63
x = 63-40
x = 23