SOLUTION: Christine has scored
76
,
75
,
70
, and
77
on her previous four tests. What score does she need on her next test so that her average (mean) is
77
Algebra.Com
Question 1063737: Christine has scored
76
,
75
,
70
, and
77
on her previous four tests. What score does she need on her next test so that her average (mean) is
77
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
mean=total/n
For a mean of 77 on 5 tests, the total has to be 77*5=385
In the four tests done, the scores add to 298
385-298=87
She needs a 87 or higher.
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