SOLUTION: 1.) You have made scores of 81, 76, and 82 on three quizzes. What is the least you can make on the fourth quiz to have an average of at least 80?

SOLUTION: 1.) You have made scores of 81, 76, and 82 on three quizzes. What is the least you can make on the fourth quiz to have an average of at least 80?

Algebra.Com

Question 800113: 1.) You have made scores of 81, 76, and 82 on three quizzes. What is the least you can make on the fourth quiz to have an average of at least 80?
Answer by Cromlix(4381) (Show Source): You can put this solution on YOUR website!
Total scores on 3 quizzes = 239
Average for 4 quizzes = 80
Total score for 4 quizzes = 320
320 - 239 = 81
A score of 81 would have to be
made to attain an average of 80
for all 4 quizzes.
Hope this helps.
:-)
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