SOLUTION: a student has the following three test scores:84,55,76 what possible scores could she get on the next test so that her average test score is at least 70?

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Question 909758: a student has the following three test scores:84,55,76 what possible scores could she get on the next test so that her average test score is at least 70?
Answer by JulietG(1812) About Me  (Show Source):
You can put this solution on YOUR website!
Assuming each test is worth the same, there are a possible 400 points. So far she has 84+55+76 = 215.
She desires 70% of 400, or a minimum of 280 points.
280 points - 215 already earned = 65 points minimum on her next exam.

She should aim higher ;-)