Asked by Glory
Mercy must obtain an average mark of at least 85 to get an A grade in her mathematics examination,out of the four examinations she obtained 80,85 and 82 in the first three.
Find the mark she must obtain on the fourth examination of to enable her get an A grade.
Find the mark she must obtain on the fourth examination of to enable her get an A grade.
Answers
Answered by
PsyDAG
Mean = ∑x/n
(80+85+82+x)/4 ≥ 85
Solve for x.
(80+85+82+x)/4 ≥ 85
Solve for x.
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