Asked by S
If u scored 85,89,89,91 on a test but u need an average mean of 90 what will u have to score on ur last test to get 90?
Answers
Answered by
bobpursley
add the scores.
(Addedscores+Lasttest)/5=> 90
solve for lasttest
(Addedscores+Lasttest)/5=> 90
solve for lasttest
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