SOLUTION: Aldo has scored 83 , 69 , 92 , 92 , and 90 on his previous five tests. What score does he need on his next test so that his average (mean) is 81 ?

Question 987898: Aldo has scored
83
,
69
,
92
,
92
, and
90
on his previous five tests. What score does he need on his next test so that his average (mean) is
81
?
Found 2 solutions by solver91311, MathLover1:
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!

Presuming that the 6th test is of equal weight to the first 5, that is, the 6th test isn't a final exam that counts as two tests or some other such scheme, then the total score for all 6 tests must be 6 times 81 in order to have an average of 81.

John

My calculator said it, I believe it, that settles it

Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!

Aldo has scored
, , , , and on his previous five tests, to have an average (mean) of , he will need
....solve for

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