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Dave’s quiz scores are 60, 90, and 80. What is the score Dave would ne
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02 Jan 2022, 07:14
02 Jan 2022, 07:14
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Dave’s quiz scores are 60, 90, and 80. What is the score Dave would need on his next quiz to increase his overall average score to 82?
A. 92
B. 94
C. 96
D. 98
E. 100
A. 92
B. 94
C. 96
D. 98
E. 100
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Re: Dave’s quiz scores are 60, 90, and 80. What is the score Dave would ne
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02 Jan 2022, 07:19
02 Jan 2022, 07:19
1
Carcass wrote:
Dave’s quiz scores are 60, 90, and 80. What is the score Dave would need on his next quiz to increase his overall average score to 82?
A. 92
B. 94
C. 96
D. 98
E. 100
A. 92
B. 94
C. 96
D. 98
E. 100
After the next quiz, Dave will have taken 4 quizzes.
If the average of those 4 quizzes is 82, then it must be the case that: (sum of all 4 quizzes)/4 = 82
Multiply both sides of the equation by 4 to get: sum of all 4 quizzes = 328
If we let x = the required score on the fourth test, we can write: 60 + 90 + 80 + x = 328
Solve to get: x = 98
Answer: D
gmatclubot
Re: Dave’s quiz scores are 60, 90, and 80. What is the score Dave would ne [#permalink]
02 Jan 2022, 07:19
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