SOLUTION: A student had the following grades in her math class tests: 100, 98, 96, 45, 89, 91, 89 If the student wants an 88 average, what does she need to earn on the next test?

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Question 984770: A student had the following grades in her math class tests:
100, 98, 96, 45, 89, 91, 89
If the student wants an 88 average, what does she need to earn on the next test?
Answer by Cromlix(4381) About Me  (Show Source):
You can put this solution on YOUR website!
Hi there,
Add all the scores:
100 + 98 + 96 + 45 + 89 + 91 + 89.
Total = 608
Number of grades = 7
608/7 = Average of 86.9
If she wants a 88 average
Then her final total score
= 88 x 8
= 704
So, she requires a score
of 704 - 608
= 96
This is the score she requires
to give her an 88 average.
Hope this helps :-)