SOLUTION: Marie scored 95, 86, and 89 on three science tests. She wants her average score for 6 tests to be at least 90. What inequality can you write to find the average scores she can get

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Question 999454: Marie scored 95, 86, and 89 on three science tests. She wants her average score for 6 tests to be at least 90. What inequality can you write to find the average scores she can get on her nest three tests to meet this goal? Use s to represent the lowest average score.
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


If she wants an average of 90 on 6 tests, then the total of her scores for the 6 tests must be 6 times 90. You can calculate the total of the first three scores and then subtract that from the overall total needed. This is the total she will need for the last three tests. Divide this total by 3 to get the average needed for the last three tests.

John

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