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Mathematics, 16.10.2020 05:01 coontcakes

Jack's grades on his last 4 tests were 85%, 76%, 95%, and 81%. What does he need to get on his fifth test to have an average of at least 85%?

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Jack's grades on his last 4 tests were 85%, 76%, 95%, and 81%. What does he need to get on his fifth...

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