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Katie is averaging 8 test scores. She makes a mistake and divides the correct sum by 9, which yields an average of 80. What is Katie's correct average test score?
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4 votes
Katie is averaging 8 test scores. She makes a mistake and divides the correct sum by 9, which yields an average of 80. What is Katie's correct average test score?

User SharpEdge
by
5.4k points

2 Answers

5 votes

Answer:

90

Explanation: Total points: 9(80) = 720 points

720 points/ 8 scores = 90

User Etienne Perot
by
4.9k points
6 votes
90%. multiply the decimal then divide
User Wahkuna
by
4.8k points
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