SOLUTION: On the last three chemistry exams a student scored 89,88, and 90. What score must the student earn on the next exam to have an average of at least a 90? Thank you!
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Question 621540: On the last three chemistry exams a student scored 89,88, and 90. What score must the student earn on the next exam to have an average of at least a 90? Thank you! Answer by kayazay(3) (Show Source):
You can put this solution on YOUR website! 93 at least..
plug n play.. to raise average of 90 need to do better than 90 as scores of 88 and 89 drops the average score.
add 89, 88, 90 and 93 then divide by 4.. = 90
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